The current TWS headphones market has developed from a dark horse to a great horse. The steady growth of the market and sales year by year has promoted the rapid development of the bluetooth headphones market and brought many new opportunities. The beginning of all this is to officially cancel the 3.5mm audio interface on the iPhone 7 series mobile phones in 2016, and launch a new product line Apple AirPods true wireless headphones.
As a giant in the field of science and technology, every expansion of a new product line indicates the future development direction of the industry. Once the Apple AirPods were launched, this dual-channel transmission technology with a charging compartment solution quickly led the market. Android and audio manufacturers have followed suit, and new brands have continued to join forcefully. After more than four years of development, TWS true wireless headphones have become the fastest growing consumer electronics products.
The 52audio database shows that in the past four years, the global sales of branded true wireless headphones in 2018 were 46 million units, and the sales volume in 2019 was 90 million units, a 96% increase in sales compared to 2018. In the difficult 2020, the sales volume of brand TWS headphones will continue to grow, reaching 300 million units, an increase of 230% year-on-year.
Among them, the mobile phone brand based on the huge user group of the mobile phone market, and the more comprehensive user experience brought about by the dual-end optimization, occupies a major position in the current TWS headphones market. Although Apple’s market share is declining, it still occupies a market share of up to 40% and is in a leading position. And Xiaomi, Samsung, Huawei, realme, OPPO, etc. followed one after another.
The rapid development of TWS true wireless headphones has also led to the industrial upgrading of related supply chain manufacturers. Among them, the main control chip, power management IC, wireless charging receiver chip, charging case batteries, earbud batteries, touch control and other technological advances have also improved The performance and functions of TWS headphones bring a better user experience. The virtuous circle formed has promoted the stable and healthy development of TWS true wireless headphones.
With the new year set sail in 2021, 52audio has made many reports on major changes in the audio market that have become history, analyzing the market development in 2020 from many aspects.
This time, let us look forward to the future together. From TWS headphones product form, Bluetooth technology standards, special sound effects, intelligent interaction, human health applications, active noise reduction, main control chips, sensors, speakers, power management chips, and more than a dozen batteries, etc. Explore future development trends.
1. TWS earphone product form: bean style, handle shape, sports hanging ear
Although the current TWS true wireless headphones products have their own characteristics, they are mainly divided into two forms: “handle” and “bean”, as well as in-ear styles with earbuds and semi-in-ear styles without earbuds. There is also an ear-hanging product that is mainly biased towards the sports market, which can provide more stable wearing.
Among them, semi-in-ear earphones can bring a comfortable wearing experience, and the music sound field is relatively comfortable, and will not produce dull pressure; due to the existence of earbuds, in-ear earphones are closely attached to the ear canal and have a strong airtightness. The performance is more conducive to the active noise reduction function; while the “bean-style” earphones are small and light, and they are more comfortable to wear and beautiful.
In 2020, the active noise reduction function will be popular all over the world, and the newly launched mid-to-high-end flagship products of various brands are equipped with this function. And by 2021, the prices of products that support active noise reduction will continue to be more affordable to the people, and the era of standard active noise reduction is coming.
For example, the newly released 1MORE ComfoBuds Pro, Huawei FreeBuds 4i, Soundcore Liberty Air 2 Pro, Samsung Galaxy Buds Pro, Libratone AIR+ 2nd generation and other products all support active noise reduction and adopt in-ear design. Among them, only Samsung has a bean-like appearance, and the others are shank-like shapes.
Although each brand has its own design style in appearance design, many new TWS headphones gradually tend to have a handle-like in-ear design. From the product itself, this structure is more convenient for signal stability, sound transmission, and mass consumption. The positive feedback from the author also shows the recognition of the handle-like structure.
Among them, in addition to the reasons for the active noise reduction function we mentioned above, the addition of functions such as call noise reduction, bone conduction, and spatial audio also requires more space for firmware support. Therefore, the handle-shaped in-ear design may still be the mainstream TWS headphones form in recent years.
2. Bluetooth audio technology standards: Bluetooth 5.2, LEAudio
The addition of bluetooth technology can be said to be a major turning point in the development of headphones. It effectively reduces the wire’s constraints on the use of headphones, laying the foundation for the explosion of TWS true wireless headphones, and it is the most important of TWS true wireless headphones. One of the technologies.
In 2020, the Bluetooth Technology Alliance (Bluetooth SIG) launched a new generation of bluetooth audio technology standard——LE Audio. Based on the bluetooth 5.2 standard, it adopts a brand-new LC3 high-quality, low-power audio decoder; expands the application of bluetooth technology, supports multiple streaming audio, broadcast audio technology, and can provide strong support for hearing aids for future TWS headphones The function provides a lot of new development directions.
Recently Qualcomm released a report “Questions and Answers about LE Audio”, which answered in detail what LE Audio is, why LE Audio was launched, what advantages does LE Audio have, and what new use cases it gives, and answers LE Audio’s future audio for Qualcomm The impact of products and technologies. At present, there are at least 9 major brands on the market that have launched 16 new headphones that support bluetooth 5.2. In the future, these two technologies will be rapidly popularized to enhance the user experience of TWS headphones.
3. Special audio functions: spatial audio, 360° surround sound
The special sound effects of TWS true wireless earphones are also a feature that users pay high attention to. At present, the main applications that have been applied to TWS headphones include Apple’s spatial audio, Sony’s 360 presence sound effects and the latest Samsung 360° sound effects. The main similarity is that it can provide an on-the-spot sound experience when watching a video.
Spatial audio is a feature launched by Apple at the WWDC20 Global Developers Conference. The first product to support this feature is Apple AirPods Pro true wireless headphones. In 2020, Apple AirPods Max headphones will be released, which also supports spatial audio functions. It is learned from the current 52audio news that Apple’s new AirPods4 to be released in the near future may also be equipped with this function.
Spatial audio is mainly by adding directional audio filters, fine-tuning the frequency received by each ear, and using acceleration sensors and gyroscopes to track head movements, and analyze them based on the movement data of the relative movement of the head and the screen. For example, use scenarios such as turning of vehicles and tilting of the aircraft’s fuselage continuously remap the position of the sound field to achieve an immersive audio experience.
360 Reality Sound is an audio technology introduced by Sony at the CES International Consumer Electronics Show. It integrates concert-like live musical instruments into a 360° spherical space, and reproduces the music on the headphones according to the determined distance and angle information. In the immersive music experience to make it feel.
The 360° sound effect function is a new feature launched by Samsung in the Galaxy Buds Pro, which can make the sound have a sense of direction and distance. Samsung Galaxy Buds Pro uses Dolby head tracking technology, when the user is watching a video, movie or TV show , The intelligent motion tracking sensor (six-axis acceleration sensor) will accurately locate the direction of the sound in real time with the movement of the head.
The spatial sound function effectively enriches the functions of the TWS headphones and gives users a new audio experience. But it also needs sensor support and complex software algorithms, so currently only Apple, Sony, Samsung and other head brands support this function.
But in the future, this feature will or will become a trend, and more brands will be equipped with this feature to enhance the competitiveness of their own products. At the same time, the industry generally believes that this technology is a pavement for future AR/VR and other functions, and it is better. Application prospects.
4. Intelligent interaction methods: voice interaction, gesture control, pressure sensing, translation function
The current TWS true wireless headphones interactive experience mainly includes physical buttons, touch buttons, pressure-sensitive buttons, and a combination of touch and pressure-sensitive control methods.
The pressure-sensitive button combines the many advantages of the former. It can achieve a control method similar to a physical button without destroying the appearance of the headphones, and has high sensitivity and accuracy. It also avoids the problem of false touches, or it will become the future TWS The main operation mode of true wireless headphones.
Smart voice assistant
Intelligent voice interaction is currently a way to control TWS true wireless headphones, but currently TWS headphones voice interaction is mainly carried out through the voice assistant of the connected terminal device, so it needs to be supported by the connected device and can only be used after being awakened by a button.
However, 52audio also saw that there are already products with built-in smart voice such as 360 PlayBuds Pro. After being awakened by a wake-up word, you can perform operations such as searching for mobile phones, checking translations, setting navigation, setting alarms, and sending WeChat. Moreover, various operations can be performed without a wake-up word during high-frequency operations, which frees hands and enhances the user experience.
Gesture control is a novel interactive method that has been successfully applied to smart phones and smart speakers with screens. It can perform corresponding operations on the device through different gestures. On the TWS true wireless headphones, this way of air interaction needs to rely on the addition of sensors such as gyroscopes and accelerometers, and then cooperate with related algorithms to achieve this function.
Gesture control is also a major development direction for true wireless headphones in the future, and audio manufacturers are currently conducting related research. In 2020, Apple applied for a “wearable interactive audio device” patent, which shows that Apple is also actively researching to implement air-to-air interactive functions by adding new sensors, so as to provide future AirPods users with more choices.
The translation function is a new application of intelligent voice interaction. At present, the better products on the market are XiaomiDu XPods true wireless smart earphones and iFLYTEK iFLYBUDS true wireless smart earphones. Both products are implemented in the call process through the corresponding APP. The voice translation function, and the English and translated content will be recorded in real time on the mobile phone interface for reference. This feature is mainly aimed at specific scenarios, and may not be universal in the future development of TWS headphones, but it is an important development direction of TWS headphones.
Pressure sensing combined
Speaking of the best interactive operation solution, the combination of multiple methods must be the best way to enhance the user experience. Not only can it further enrich the control options, but it can also give users freedom of choice and enhance their personalized use needs.
For pressure sensing, there are two TWS headphones products that are well received by the market, Apple AirPods and Huawei Freebuds Pro. Among them, Huawei FreeBuds Pro true wireless noise reduction headphones can be said to be the most comprehensive product on the market with multiple interactive methods. It not only integrates two control methods, touch and pressure sensing, but also supports bone voiceprint recognition.
Find the bone voiceprint settings of Huawei FreeBuds Pro in the bluetooth settings of the phone, you can choose the purpose of bone voiceprint recognition, including saying “XiaomiYi” to the headphones to unlock the device, and saying “WeChat Pay” to the phone to jump to the WeChat pay interface. Saying “AliPay” will also jump to the corresponding interface, no matter whether the phone is on or off, and you don’t need to wake up the headphones’s voice assistant first, it can be used very quickly.
5. Human health detection applications: heart rate, hearing aid
With the rapid development of bluetooth headphones and related technologies, the product functions of the current TWS true wireless headphones have been greatly expanded. Continuously enrich the application of products and enhance the overall user experience of users. Among them, hearing aids, health testing and other functions have always been a key point that brand products and users are concerned about. Therefore, there are also many manufacturers that are actively exploring in this area, combining headphones products with health monitoring, auxiliary functions and other functions.
In the current bluetooth headphones market, hearing-aid bluetooth headphones products are mainly used in neck-mounted bluetooth headphones products, such as BeHear Now ABH-101B hearing-aid neck-mounted bluetooth headphones, 1MORE EHD9001B, etc.
52audio learned that after updating the system, an “hearing” function has been added to Apple’s iPhone. Pairing with AirPods can directly make your phone a microphone and AirPods a receiver. Effectively assist the hearing impaired people to learn the surrounding sounds. And this function can also provide long-distance radio for normal people.
The health monitoring function has always been a relatively important development direction for smart wearable devices. Previously, it has been more mature in bracelets and watch products. TWS earphones also have the characteristics of being in close contact with the human body and easy to wear, which can have a good application for health detection functions.
Amazfit ZenBuds sleep earbuds is one such product. Earbuds can play sleep aid rhythms to help users fall asleep; they can monitor heart rate during sleep, record sleep status and stage, and users can view sleep quality reports in the APP. The content includes the proportion of deep sleep, the proportion of light sleep, the number of wakefulness, the average heart rate of sleep, the number of turning over, and the common sleeping position. In the future, there will be more TWS headphones equipped with health detection functions to enhance user experience.
6. Smart active noise reduction
The function of active noise reduction was first applied to headphones with noise reduction, because the headphones have good earmuffs, which can achieve physical passive noise reduction. At the same time, the earmuffs also have enough space for excellent active noise reduction. It is possible to achieve the realization of, and very representative manufacturers include BOSE and SONY.
Active noise reduction
When Apple AirPods Pro combined active noise reduction with TWS true wireless headphones, it quickly became popular in the market, and active noise reduction also jumped from the original niche function to the mass demand market.
In 2020, various brands have begun to gradually launch earphone products that support active noise reduction, lay out the market, and enhance the competitiveness of their products. In the 2020 annual summary, 52audio has made detailed disassembly of 24 active noise reduction true wireless earphones. Summary analysis report.
In 2021, the competition for TWS noise-canceling headphones will be even more fierce, and many new products launched in the beginning of the year all support the active noise-canceling mode. Huawei also launched the relatively more friendly Huawei FreeBuds 4i wireless noise-cancelling headphones to compete in the low-end market. All these show that the active noise reduction function is still the trend in the next few years.
Although the current active noise reduction headphones require an in-ear form to achieve better noise reduction, and the ear pressure and discomfort caused by the noise reduction function for some sensitive people, the wearing comfort is not as good as the semi-in-ear with open ear canal In the future, with the advancement of intelligent adaptive noise reduction technology and the emergence of open noise reduction headphones, the comfort of noise reduction headphones will continue to be improved to meet the noise reduction needs of different people.
AI smart call noise reduction
According to 52audio consumer research, the function of making a call is the most used function after most consumers purchase TWS headphones. In daily life, the scenes where we make calls are very rich and complex. Subways, buses, roadsides, restaurants, offices, etc. will all bring great challenges to the call function of the headphones.
Therefore, the function of call noise reduction has directly become the rigid demand of TWS headphones. Currently, TWS headphones products on the market mainly use three methods to reduce call noise processing, namely, the single-microphone solution, the dual-microphone array solution, and the acceleration Sensors, VPU and in-ear microphones assist in implementation.
However, traditional call noise reduction solutions mostly use multi-mic arrays, which are difficult, costly, and have very limited noise reduction scenarios. Therefore, we have also seen AI smart call noise reduction solution providers in the market, and there are already a number of well-known TWS headphones product application cases, namely: Sound+, ELEVOC. In the future, the demand for AI call noise reduction will be significantly increased, and more players are also very much looking forward to entering the game.
7. Main control chip
In TWS true wireless headphones, the importance of the master chip is self-evident. At present, dozens of manufacturers have deployed the TWS main control chip market on the market. The comprehensive and highly integrated bluetooth audio SoC provides a strong guarantee for the realization of many functions of the TWS headphones.
Unlike mobile phones and headphones, which have a relatively large volume, TWS headphones have higher requirements for the size and integration of the main control chip due to portability requirements. And with the addition of many new configurations such as noise reduction and functional sensors, higher requirements are put forward for the use of space in the cavity and the high integration of the chip.
In TWS true wireless headphones that support active noise reduction, in order to achieve a better noise reduction effect, in addition to the reasons for the shape of the external headphones described above, the core factor is the ANC noise reduction chip and the noise reduction algorithm. However, most of the current TWS headphones still use special ANC noise reduction chips in addition to the bluetooth master SOC to achieve better noise reduction functions.
With the development of TWS headphones, there are also true wireless noise-cancelling headphones products such as 233621 Zen , OPPO Enco X, OPPO Enco W51 , Edifier TWS NB2, Urbanista London and other true wireless noise-canceling headphones products that use bluetooth audio SOCs with integrated ANC noise reduction technology, such as Qualcomm’s flagship chip QCC5124, Hengxuan BES2500Y, Zhongke Lanxun BT889X, etc. Previously, I love audio network compiled the top-of-the-line bluetooth audio master chip with integrated ANC for everyone.
While reducing the motherboard space, it also brings good noise reduction performance. Therefore, in the next few years, the market for main control chips with integrated ANC noise reduction functions may continue to increase and occupy a dominant position.
The relationship between high integration and chip size is of mutual influence. As the integration of the main control chip increases, the chip size also becomes larger. The future development direction of TWS true wireless headphones will inevitably move toward a more compact and lighter direction, thereby improving wearing comfort and full-scene applications. This requires the addition of higher chip manufacturing processes, reducing the chip size, and efficiently using the interior of the headphones. Space, reduce the size of the headphones. Therefore, a smaller size master chip will also be the trend of future development.
Higher computing power
People have been using TWS headphones for more time and more usage scenarios, and with it comes the demand for more functional applications. How to achieve what I love audio network mentioned in this TWS ten major development trend prediction: Features Audio, intelligent interaction, hearing aids, health monitoring, active noise reduction, and other functions require bluetooth master chip manufacturers to continuously pursue higher computing power.
Apple took the lead in applying the H1 chip using SiP (System in Package) system-in-package on AirPods Pro, and the main control chip of the recently released Samsung Galaxy Buds Pro also adopted this packaging form.
The SiP package can greatly reduce the area of the circuit carrier, but the process is also more complicated, and has high requirements for chip layout, stacking, and heat dissipation. However, as the demand for miniaturized smart devices represented by TWS headphones continues to grow, and the demand for multi-functional integration and low-power main control chips increases, SiP technology will be able to provide a more ideal solution.
Many functions of TWS true wireless headphones require the addition of corresponding sensors to provide hardware support. In the current TWS headphones, the main sensor units include speakers for music playback, MEMS microphones for active noise reduction and calls, optical sensors for ear detection, bone voiceprint sensors for call noise reduction, and 360 Six-axis sensor with high-degree surround sound, etc.
In TWS headphones, the previous microphones are mainly used for voice calls. With the development of ANC and ENC noise reduction technology on TWS headphones, in order to achieve better noise reduction effects, multi-microphone coordination solutions have been widely adopted, and The performance requirements of microphones are also constantly improving. MEMS silicon microphones have become the mainstream with many advantages such as small size, SMT, and strong stability.
In-ear detection is an innovative feature loved by users in the rapid development of TWS headphones. It relies on the optical sensor to automatically pause the playback when the headphones is removed, and automatically resume playback when the headphones is worn back. The user experience is effectively improved, and the power consumption when not in use can also be avoided to achieve the effect of power saving. In the current entry-level market for TWS headphones, many products have not yet equipped with in-ear detection, and then in-ear detection will become a standard feature of TWS headphones.
Bone Vibration Sensor
The bone vibration sensor only collects the vibration information of the vocal cords, and converts it into audio signals, without environmental noise in the air; the two-way call sound information received by the headphones (one way is transmitted through the air and picked up by the microphone, and the other is transmitted through the bone vibration. ), through the comparison of the noise reduction algorithm, the environmental noise is analyzed and attenuated to achieve a better voice call effect. Compared with the traditional dual-microphone solution, the suppression of wind noise and environmental noise is also better.
At present, the true wireless of Apple, Samsung, Edifier and other brands on the market adopts a bone vibration sensor + multi-microphone call noise reduction solution; in addition, this type of sensor can also be used for bone voiceprint recognition technology, such as Huawei FreeBuds3, FreeBuds Pro supports bone voiceprint unlocking and bone voiceprint payment, which expands the functions of TWS headphones and improves user experience.
Six-axis sensor, integrated acceleration and gyroscope, mainly to realize the tapping function and head rotation tracking, provide a richer interactive design supplement, head control to answer and reject calls, fine head motion tracking, used to achieve 360 degrees of the headphones Sound effect function.
In the early stages of the development of TWS headphones, due to the limitations of bluetooth transmission, the sound quality of headphones has always been a point of criticism from users. With the development of bluetooth technologies such as bluetooth 5.2 and LE Audio mentioned above, the restrictions on bluetooth audio transmission are rapidly decreasing.
On the other hand, it is the speaker unit that affects the sound quality. As a headphone product, the speaker is its most basic configuration. At present, the main application of the speaker product in the TWS headphones belongs to the dynamic driver. The dynamic driver has good low-frequency performance, but due to the size limitation, it cannot take into account the excellent mid-to-high frequency effect.
The armature driver has the characteristics of small size, low power consumption, and high sensitivity, and has been widely used in hearing aid products. However, with the rapid development of TWS headphones, moving iron units have also begun to be applied to some mid-to-high-end products to improve sound quality. And some products also use dual armature drivers to further enhance the sound quality.
Compared with the dynamic driver, although the armature driver is more excellent in the mid-to-high frequency performance and can provide higher resolution and detail performance, it cannot achieve the dynamic driver’s shocking power at the low frequency. Therefore, the hybrid driver has appeared. Through the combination of dynamic and armature, different audios can be processed separately to achieve better results. The disadvantage is that the hybrid driver is relatively larger in size and has higher requirements for the structural design of the product.
In the future TWS headphones, dynamic, armature, hybrid, and dual dynamic unit combinations will exist, continue to maintain diversified development, and hand over the demand for sound quality to consumers to choose. In order to adapt to the volume of true wireless headphones, the unit is miniaturized It is also a trend.
9. TWS headphones power management chip
The power management chip also plays a vital role in the TWS headphones, ensuring the battery life of the headphones. The power management chip is mainly used for the charging and discharging of the headphones, and the real-time protection of the battery during the charging and discharging process, such as overcharging, overdischarging, overcurrent, overtemperature, and short circuit.
At present, the supplier of new power management products is very mature and can meet the needs of various TWS headphones products on the market. 52audio often sees in the disassembly, such as: ETAsolutions, TPS, LPS, Sinhmicro, etc.
Although the charging and discharging power of the power management chip is not large compared with the traditional equipment, for the TWS headphones, which has extremely high requirements for portability, its safety, low power consumption, high withstand voltage, high integration and High efficiency and other aspects have relatively high requirements.
With the rapid development of TWS headphones, the power management chip also has a highly integrated SoC single chip, integrated MCU functions, charging management two-in-one, three-in-one and even six-in-one TWS headphones power solutions. By 2021, this trend may be further amplified, and various manufacturers will launch power management chip products with better performance.
10. TWS headphones, rechargeable battery life
The development of TWS true wireless headphones is still inseparable from the advancement of battery technology. Before the release of Apple AirPods, the main reason why bluetooth headphones have not been widely used is battery life. Apple AirPods also continue to innovate in terms of battery life, and the solution of using earphones and charging bins has quickly led the development of the industry.
With the development of TWS headphones, in order to adapt to the different forms produced during the development process, TWS headphones batteries are mainly divided into three types, namely polymer soft-pack batteries, button batteries and pin-type batteries. 52audio previously compiled 145 TWS rechargeable box batteries from 33 brands, 210 TWS headphones battery products from 30 brands, and 103 TWS headphones button batteries from 17 brands.
Among them, the polymer soft pack battery technology is relatively more mature and the price is relatively low. Due to the need to adapt to different earphone shapes, it has formed square, long, and button shapes; button batteries can efficiently use the internal space of the earphones due to their compact size. , The advantages of convenient positive and negative electrode welding are gradually popular in TWS headphones batteries; the pin type is mainly used in the handle-shaped bluetooth headphones, occupying a small market.
Fast charge, wireless charge
The limitation of the development of battery technology, in addition to the solution of the charging compartment on the TWS headphones, the other is the development of fast charging technology. Quickly replenish the power through fast charging, reduce the impact of a short battery life, and effectively improve the experience of using TWS headphones products.
The application of wireless charging technology on TWS earphones is to improve the convenience of charging the earphones. When the earphones are not in use, place the charging case on the charging board at will, charge them as they go, and replenish energy in real time. According to 52audio’s incomplete statistics, there are currently more than 10 TWS true wireless headphones that support wireless charging on the market.
Mobile phone products have gradually fully adopted the wireless charging function. Therefore, in order to perfectly match the peripheral audio accessories and charging accessories, the convenient function of charging TWS true wireless headphones in reverse by mobile phones has also been introduced.
The TWS headphones market has maintained a rapid and stable development after more than 4 years, and the current market is still showing a flourishing situation. However, in terms of product form, brand share, industrial chain suppliers, etc., they have begun to stabilize. Mobile phone brands are gradually occupying a dominant position, and important accessory companies such as main control chips and batteries occupy a large number of markets, and the functions of headphones are gradually improving.
From the current development of the TWS headphones market to discuss the development trend in the next few years, the popularity of the active noise reduction function will make mainstream TWS headphones more of a handle-shaped in-ear design; a new generation of bluetooth audio technology standards launched in 2020 LE Audio will usher in rapid popularization and application in 2021.
In terms of functions, in intelligent interaction, the built-in intelligent voice assistant may usher in a breakthrough. The ultra-low power standby voice wake-up function frees hands, without the need to implement various operations through the mobile phone; intelligent voice translation will be applied to more products; Gesture control provides a new control experience, but the technical difficulty is relatively high, and it will take some time to apply; and before that, the combination of pressure and sensing is the best solution. To
In terms of other functions, special audio functions, human health detection, hearing aids, bone conduction applications, etc. are the new functional directions of TWS headphones that may have made great progress in recent years, thereby further enriching product functions and enhancing user experience. The speaker unit may gradually shift to moving iron units and coil iron units that can bring better sound quality, thereby enhancing the music experience.
In terms of configuration, as the functionality of TWS headphones continues to be enriched, more firmware support is needed, and higher requirements for the internal space of the headphones will be put forward. And with the continuous development of technology in the chip field and the application of higher technology, the main control chip and power management chip will continue to improve in integration and performance to meet the needs of the fast-developing TWS headphones; in terms of battery life, button batteries rely on more The small size may be used in a large number of TWS headphones batteries, and fast charging and lower power consumption will also be the best solution to enhance the headphones battery life experience.