Refresh your whole body with the brush's vibration. Scalp Refresh Full Body Refresh Also for the scalp, shoulders, arms, legs, etc.! Usable on both sides: brush surface and uneven surface! The switch has two levels of strength: strong and weak, allowing you to adjust to your preference. Easy operation! The brush vibrates when the switch is turned on. Battery operated / 2-level vibration (strong/weak) / One-switch operation Product Weight / Approximately 85g (body) Approximately 110g (including box) Product Size / Approximately W6.5cm × D5.5cm × H23cm (body) Approximately W6.5cm × D5.5cm × H27cm (box) Batteries / AA batteries x 2 (sold separately) Continuous Use Time / Approximately 1.5 hours (strong) Approximately 3 hours (weak) Main Materials / ABS, epoxy resin, PE