The specific steps are as follows:

1, it is the first time to use it, and the battery of the electric vest needs to be fully charged.

2. Put on the electric vest, connect the battery with the USB cable in the pocket of the electric vest, turn on the switch of the battery and put the battery back in the pocket.

3. Find the power button of the electric vest, press it for the first time, and the red light will light up. This is the highest temperature, and you can feel the electric vest heating up rapidly.