EMS Micro-current Three-color Color Light Temperature Sense Neck Massager

Product information:
Color: White
Charging voltage: 5V-1A
Rated Power: 2.5W
Battery parameters: 3.7V 500mAh
Charging Duration: 2H
Duration:
Vibration, heating and EMS modes are on at the same time, 50-60 minutes
Vibration and EMS mode at the same time, about 2 hours