Baseus Bowie MA10 earbuds are ergonomically designed to provide the comfortable and stable wearing experience. Support IPX6 waterproof, no fear of sports sweat erosion. Support hybrid Active Noise Canceling function, the maximum noise canceling depth reaches -48dB. Support ENC call noise canceling, which can effectively block background noise and ensure clear calls. Support Bluetooth 5.3 and multi-point connection, can connect two bluetooth devices at the same time. Support DCLL dual-channel low latency, the latency can be as low as 38ms.

Baseus Bowie MA10 support BRC fast charging, and you can listen to music for 2 hours after charging for 10 minutes. When fully charged, the single battery life can last up to 8 hours, and the total battery life can reach 140 hours. Through the Baseus App, you can set touch controls, adjust 12 preset EQ sound effects, and more.

We have also teardown the Baseus products including: Baseus AeQur G10, Baseus Bowie M2s, Baseus Bowie M2, Baseus Bowie E9, Baseus Bowie E2, Baseus AirNora, Baseus Encok W01, Baseus Encok W04 Pro, Baseus Encok W07, Baseus Encok W09 and Baseus WM01. Let’s take a look at the detailed teardown report of Baseus MA10.

01/ Baseus MA10 Charging Case Teardown

Teardown the charging case shell and take out the internal cockpit structure.

Remove the battery, and fix the lower motherboard with screws. The battery wires are soldered to the motherboard.

The charging case has a built-in 18650 cylindrical lithium battery – charging limit voltage: 4.2V, nominal voltage: 3.7V, rated capacity: 2600mAh 9.62Wh.

The battery circuit protection board is wrapped and protected with high-temperature insulating tape.

Remove the screws and remove the motherboard on the cockpit. There are magnets on the bottom of the cockpit to fix the earbuds and charging case cover, and a light guide structure on the edge.

Take out the light guide column structure, and there are magnets on the bottom to fix the charging case cover and realize the Hall sensing function.

There is an iron pin on the back of the hood, corresponding to the magnet that fixes the charging case cover. With the Hall element on the main board, the function of opening the cover and connecting is realized.

The circuit on the side of the motherboard of the charging case.

The circuit on the other side of the charging case motherboard is equipped with a sponge glue to fix the battery.

Function button, used for bluetooth pairing function control.

Pogo Pin connector for charging earbuds.

INJOINIC IP5333 multifunctional power management SoC, integrated boost converter, lithium battery charging management, battery power indicator and TYPE-C protocol, provides a complete solution for TWS charging case. IP5333 is very suitable for intelligent two-way communication applications where the current demand is gradually increasing, and it can provide the function of opening the cover.

IP5333 only needs one inductor to realize charging and boosting function. Low cost inductors and capacitors can be supported. The synchronous boost system of the IP5333 provides a rated 1A output current with a conversion efficiency as high as 92%. At light load, it will automatically enter the sleep state, and the quiescent current will drop to less than 20uA. IP5333 adopts switch charging technology, provides a rated 1A charging current, and the charging efficiency is as high as 91%.

IP5333 has built-in IC temperature protection and input voltage intelligent regulation of charging current. IP5333 built-in 12bitADC can accurately measure battery voltage and current. Support 1- 4 LED power display. The high integration and rich functions of IP5333 make it require only a few peripheral devices in application, and effectively reduce the size and BOM cost.

The peripheral boost inductor of the power management chip is used to boost the built-in battery to charge the earbuds.

Prisemi P14C5N overvoltage and overcurrent protection chip. P14C5N supports input overvoltage and undervoltage protection, and overcurrent protection after the circuit starts. When the input voltage exceeds the input overvoltage protection threshold, the device turns off the built-in MOSFET to disconnect the input and output.

P14C5N supports up to 30V input voltage and 3A output current. Built-in 55mΩ conductance switch tube, with ultra-fast overvoltage response time of 50ns. Support programmable over-current protection, over-voltage protection supports 4.5-16V range, can be set by using an external voltage divider resistor, or ground the voltage setting pin to use a fixed 6.8V over-voltage protection. At the same time, the chip also has a built-in overheat protection function, which supports the control pin to control the switch.

4 LED indicators.

The Hall element of the AR3C1 silk screen is used to sense the magnetic field change when the charging case is turned on/off, and then notify the charging case MCU and earbuds to pair or disconnect the connected device.

Tear off the battery insulation protection and remove the battery protection plate.

The silkscreen information on the battery cell is consistent with the external label.

The circuit on one side of the battery protection board.

The circuit on the other side of the battery protection board has no components.

The lithium battery protection IC of silk screen DW01A is responsible for the protection of overcharge, overdischarge and overcurrent of the battery.

The silk screen 8205A MOS tube works with the lithium battery protection IC.

02/ Baseus MA10 Earbuds Teardown

Take off the earwings and teardown the earbud cavity.

The internal structure of the rear cavity is used to fix the earbud battery through the bracket.

Take out the speaker and FPC inside the front cavity.

The loudspeaker is fixed on an independent stand. There are tuning holes on the bracket, which are protected by wire mesh.

Remove the speakers. The loudspeaker diaphragm is protected by a metal cover.

FPC circuit on the back of the speaker, with a noise canceling microphone at the end.

After actual measurement, the size of the speaker is about 10mm.

Laser carving R313 A51D MEMS microphone for noise canceling function to pick up sound from inside the ear canal – from RAYKING.

Take out the bracket and components inside the rear cavity. The bottom of the rear cavity is provided with a bluetooth antenna and a touch detection patch. In the middle is the light guide column of the ring indicator light, and there is a microphone pickup hole on the top.

The main board is fixed on the back of the bracket, and the FPC is connected to the main board through a connector.

Flip open the connectors and remove the motherboard and battery from the bracket.

The BTB connector that connects the FPC inside the front cavity to the motherboard – from OCN, model: OK-128GM010/2-35.

The earbud has a built-in soft pack button battery – model: M1240A6, voltage: 3.85V, capacity: 50mAh 0.193Wh.

The circuit on the side of the earbud motherboard.

The circuit on the other side of the earbud motherboard.

Motherboard connects to FPC’s BTB connector – from OCN, model: OK-128GF010/2-35.

The LED light provides the light source for the ring indicator light.

Connect the bluetooth antenna and the two metal dome of the touch detection patch.

The second laser carving R313 A51D MEMS microphone from RAYKING. The two microphones work together to pick up sound, together with the noise canceling algorithm, to bring a high-definition audio experience.

Silkscreen N 2240 IC.

Bluetrum BT8952F bluetooth audio SoC belongs to BT895x series – based on 22nm advanced low-power technology, supports Bluetooth 5.4 LE Audio protocol (passed Low Energy Audio certification) and LC3 codec function.

BT8952F has a built-in 32-bit high-performance RISC-V processor core and HIFI 4 DSP. The maximum speed of the processor is 125MHz, and the maximum speed of HIFI 4 is 270Mhz. Built-in 16Mbits flash memory, 892KB RAM, flexible GPIO pins with programmable pull-up and pull-down resistors. Support GPIO wake-up or interrupt.

Bluetrum BT8952F has a built-in 24bit dual-channel DAC (signal-to-noise ratio 106dB, supports single-ended and differential modes) and 24bit mono-channel ADC (signal-to-noise ratio 103dB, supports single-ended and differential modes). Support flexible audio equalizer adjustment and 2-way MIC amplifier input. BT8952F has a built-in large-scale dual-mic AI call noise canceling algorithm, which can realize dual-mic beamforming call noise canceling, or 1+1 microphone call noise canceling. Support feedforward, feedback and hybrid ANC functions. Integrated touch control, PMU module and more.

A crystal oscillator that clocks the bluetooth audio SoC – Specifications: 24.0MHz.

Screen printing 41C 01 lithium battery protection IC.

All components of Baseus Bowie MA10 noise canceling true wireless earphones.

03/ Summary

The charging case has a matte texture and is relatively large in size to accommodate a larger capacity battery. There are 4 indicator lights on the fuselage, which can provide more intuitive feedback on the remaining battery level. The bean-shaped in-ear earbuds are ergonomically designed and equipped with earwings – comfortable and secure to wear. The Baseus Bowie MA10 earbuds come in both glossy and matte finishes. The touch area is made of transparent acrylic material, with a ring indicator light, which has an excellent texture.

In terms of internal structure configuration, the charging case has a built-in 18650 cylindrical lithium battery with a capacity of 2600mAh. The motherboard is equipped with INJOINIC IP5333 multi-function power management SoC, integrated MCU, boost converter, lithium battery charging management, battery power indicator and TYPE-C protocol – providing a complete solution for TWS charging case. Prisemi P14C5N overvoltage and overcurrent protection chip is also used to protect the circuit from overvoltage and overcurrent damage.

The earbuds is equipped with a 10mm dynamic driver, two RAYKING MEMS microphones and 50mAh battery. The main chip adopts Bluetrum BT8952F bluetooth audio SoC, built-in 32-bit high-performance RISC-V processor core and HIFI 4 DSP. Support Bluetooth 5.4 LE Audio protocol, built-in dual-mic AI call noise canceling algorithm. Support feedforward, feedback and mixed active noise canceling functions.

Source: 52audio

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