1.Power:5V ,3W
2.Li Battery: 400mA,
3.Silica gel, 304 stainless steel

4.Charger 2h-3h, can use 2h

5.Micro current pulse EMS,4 heads;
6.Voice Function
7.Unique design with usb, easy to recharge, on computer or anywhere.
8.APP is easy to operate
9.6 mode function and 16 dynamics;
1015mins timer function