1. The bracelet is removed from the front screen and disassembled. The screen and the motherboard are connected and fixed through the ZIF interface, and the surface of the ZIF interface is stuck with 1 piece of styrofoam, which can play the role of secondary fixation and buffering.

2. Fix it with cross screws, remove the screws, and gently pry open the motherboard, and the motherboard of the bracelet will be loose. It should be noted that the 1 FPC antenna is welded in the lower right corner of the motherboard, and the back of the antenna is attached to the inside of the casing with double-sided tape. The FPC soft board of the heart rate sensor is fixed at the bottom of the shell with styrofoam.

3. Remove the motherboard. The lithium polymer battery is attached to the back of the main board and connected with the main board by welding. The bottom of the battery is a rotor vibrator, so it can be removed and replaced.