Product Information An EMS device that can be used on the entire body, which moves muscles by directly applying electrical stimulation. A toning exercise you can do "while" doing other things, like watching TV or cleaning! With 6 modes and 10 intensity levels, you can make detailed settings to your preference. The timer function prevents overuse, so you can use it with peace of mind ♪ ■ Product Size: Approx. W7 x D2 x H8cm (main unit) ■ Weight: Approx. 57g ■ Power Source: Lithium battery operated, uses 1 coin-type lithium battery CR2032 (sold separately) ■ Belt Size: Up to approx. 40-100cm [Short belt] Approx. 40-75cm, [Long belt] Approx. 75-100cm ■ Material: Polyester, ABS Unopened.