EMS double ball roller massage instrument

Product Name: EMS Double Ball Roller Massager
Product material: ABS
Dimensions: 184*92*69mm
Built-in battery: 3.7V 1800mA rechargeable lithium battery
Output power: 0.5W
Charging time: 5-6 hours
Packing description: host *1 charging cable *1 manual *1 warranty card *1 certificate *1