Technical details Number of vibration settings: 3 Waterproof: Yes Proper Use: Calves Types of massage: Pressure massage Materials Nylon Polyester Germanium Control Type: Button Product color: Black Machine washable: Yes Calf circumference: 35 - 42 cm Size (S/M/L): L Power Power supply type: Battery Working time: 45 min Replaceable battery: Yes 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.