EMS Pulse Handheld Sleep Aid Device

Power supply: USB plug-in
Product material: ABS material + stainless steel
Power levels: 20-level adjustment mode
Function: Handheld wired control
Display: Digital
Charging time: 3 hours
Battery capacity: 300mAh
Battery life: 1-3 hours (inclusive)
Current: 5V/1A
Product category: Handheld
Built-in battery: Yes