Xiaomi Air2 (Xiaomi Mi AirDots Pro 2) TWS Earphone Deap Teardown | Hifigo

Xiaomi Air 2 (Xiaomi Mi AirDots Pro 2)  supports LHDC Bluetooth decoding technology, resulting in higher HD sound quality. It is selling at US$79.99 at Hifigo. As Xiaomi's second-generation true wireless Bluetooth headset, the Xiaomi Air 2 has been upgraded in many ways. So what's the structure inside Xiaomi Air 2 TWS and is it worth to buy? Let's take a look.

 1. Unboxing of Xiaomi Air 2 TWS 

Parameters, manufacture, Build-in smart assistant Xiaoai. 

All in the box.

Type A - Type C cable close-up 

Red LED: Charging 

White LED : Full 

Build-in spindle design for the cover and case connection. 

2 second pressing for paring. 

Microphone for calling at the bottom

Microphone for noise cancelation on top.

Pressure relief hole

Sound hole with metal net cover.

range sensor close-up 

Sound hole with metal net cover.

Charging testing: charging current is 0.431A

50g total 

40.9g for charging case

9.3g for two earbuds 

2. Teardown of Mi Air 2 TWS  charging case 

The case fixed with glue 

The magnets for earbuds fixing and charging case cover fixing.

BN26V Hall chip close up 

Micro button close-up 

Separate the main board and the case. 

 Close-up of the charging case main board.

Battery on the other side. 250mAh，0.93Wh，3.7V/4.2v。

 

 LED indicators 

 

 Close-up of components side of main board. 

 Back side of main board

Micron button fixed by metal for durability 

S7N IC

cKBHA boost IC  +  2x 4612 ACYO IC 

 

Power supply management  IC. 

overcurrent protection IC WS3210 

HOLTEX  HT50F32002 32bit chip 

3. Teardown of Mi Air 2 TWS earbuds

Microphone for noise cancelation calling.

Speaker connected to the main board with FPC 

The composite diaphragm dynamic unit of earbud

Two layers structure on top of earbud

Close up of the two layers separated.

Dust-proof mask and Infrared light sensor nonopaque mask 

Sensor to detect the earbuds wearing status

Magnet for charging fix

FPC connects the speakers to the main board. 

Socket for the FPC

 

 The microphone for calling at bottom

 94916 printed and SMT to the PCB. 

 rubber ring for good leakproofness. 

  

z93K49 ANC microphone on top and IC with AD8 printed. 

 

 Battery  main board and two microphone total . 

 Front 

Back

Supporting structure with the white plastic part

Battery information 

Rigid-flex PCB board structure 

Back

The big size Bluetooth antenna 

C8F94 IC

The ic of Mi AirDots Pro 2 with QR code is an accelerometer for the double touching response. 

MHE12C IC and 2015CTCCCD30 IC 

BES WT230 Bluetooth Chip 

4. Verdict of teardown 

1. Xiaomi Wireless Earphone Air 2 uses a 14.2 mm composite diaphragm moving coil unit, touted to produce deep bass and high-quality stereo audio. The bass is described as rich and full, and the treble, clear and sharp.
2. The Xiaomi Wireless Earphone Air 2 box can charge the headset 1hour, the headphones being a total of 14 hours of music playback. The box is like a power bank, the headset and the storage box allow fast charging, the charge for 10 minutes makes it possible to use them for 70 minutes, in an hour we would have the full load with maximum use 4 hours use.
3. Each earphone weighs only 4.5g, which is lighter than a coin. The smooth, round body comfortably fixes in your ear for extended periods of time. It is compatible with the waterproof IPX4 protection level.
4. The upgraded Xiaomi Air2 (Xiaomi Mi AirDots Pro 2) further upgrades the user experience, taking it off, connecting the pop-up window, tapping the control, and so on, and its entire experience is very similar to that of AirPods. The price of Xiaomi True Wireless Bluetooth headset Air2 is only $79.99, which is 1/3 of that of AirPods. Once again, Air2 has implemented the brand concept of popularizing high-end products, and in this price range, it is a very worthwhile one to buy.