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 |