9 Heated Vest Zones Electric Jackets

1：Battery not included

3 ：R ecommend batteries model, please use batteries with high USB Power Delivery（unit：W）, The higher the USB Power Delivery, the higher the heating temperature.（output Power (W)=Voltage (V) × Current (A).）

for example ：output power 10W=5V*2A / output power 22.5W=5V*4.5A