Product information:
Power: 7.4 watts
Size: One size fits all
Rated voltage: 3.7 volts
Color options: 36 LED beads with wavelengths of 660 nm and 850 nm
Specifications: Heating massage function-3000 mAh

Packing list:
Wristband*1pcs+USB*1pcs+ Instruction manual*1pcs
Product Image: