Technical details Control Type: Button Proper Use: Hands Bicep circumference: 40+ cm Number of vibration settings: 3 Materials Germanium Nylon Polyester Waterproof: Yes Size (S/M/L): XL Machine washable: Yes Types of massage: Pressure massage Product color: Black Power Power supply type: Battery Replaceable battery: Yes Working time: 45 min Weight and dimensions Battery dimensions: 47 x 52 x 11 mm Packaging data Number of pieces: 1 Package contents Battery included: Yes Cables: USB Type-C Case: Yes Adaptor: Yes Safety warning Warnings Use according to the instructions in the instruction manual. Keep out of reach of children. Do not use on damaged skin or wounds.