Xiaomi Mi Band 2 was launched yesterday noon for 149 Yuan ($25), and will get on first sale at 10:00 am on June 7.
We are now going to disassemble one piece of Xiaomi Mi Band 2 with fierce force, because it is of IP67, meaning not only waterproof, but also dustproof. Xiaomi Mi Band 2 is also in super good seal. Once Xiaomi Mi Band 2 is disassembled, it is finished, meaning it most probably will not work any more.
Xiaomi Mi Band 2 has a piece PCB inside and a 70mAh lithuium battery. Its chipsets are a Dialog DA14681, a super low power consumption bluetooth wearable chipset, and a ADI adx1362 accelerator sensor.
Here is a short introduction of the updates of Xiaomi Mi Band 2.
The biggest upgrade of Xiaomi Mi Band 2 is the OLED display over Xiaomi Mi Band 1 (without display), and the forefront can display time, heartbeat, steps, calorie etc.
The wrist band of Xiaomi Mi Band 2 is also replaceable as that of Xiaomi Mi Band 1.
Xiaomi Mi Band 2 supports steps accounting, sleep monitor, long sit alarm, heartbeat monitor, incoming call alarm, screen unlock, clock alrm and passwordless payment etc.
Though Xiaomi Mi Band 2 carries a display, it still can stand by 20 days or so. Follows the disassembly process.
Xiaomi Mi Band 2 Disassembly Review
The strap buckle is made of aluminium steel, and adopts CD context design on the surface.
Xiaomi Mi Band 2 is of IP67, so no need to take if off when handwash. And thus, it is not easy to disassembly Xiaomi Mi Band 2.
The screen edge is not visible on Xiaomi Mi Band 2 thanks to the surface protective film. A capacitive button lies on screen, users can swtich the display item via this touch area. The circle touch area also adopts CD context design.
The circuit board lies behind the forefront cover, connecting to the main body via wire. In between the touch area and motherboard is sponge.
Xiaomi Mi Band 2 features a unbody PCB board inside which integrates OLED screen and processor, gyroscope etc.
Xiaomi Mi Band 2 carries an OLED screen to display time and sport info. The advantage of OLED display is requiring no backlit panel, because itself can emit light. And furthermore, the OLED display reacts fast and provides wide viewing angle.
Battery lies behind of the motherbard. Xiaomi Mi Band 2 houses a 70 mAh battery, and Xiaomi claims it can work for 20 days.
The screw holes are fixed with melt adhesive. This matters to waterproof, but not good to clear and repair.
Xiaomi Mi Band 2 monitors heartbeat via electric-light measure. The photodiode illuminates on vessel, and then detects the heartbeat according to the green light absorbtion rate.
Xiaomi Mi Band 2 totally is a great upgrade of Xiaomi Mi Band 1 for more features, improved features and better design. And meanwhile, it is only for $25.
The one above is Xiaomi Mi Band 1, and the one below is Xiaomi Mi Band 2. You can compare their motherboards yourself.
Xiaomi Mi Band 2 is worth purchase.