Features: Using the training pulse with the frequency of specific current. Help to tone, tighten and strengthen your body muscles in an easy way. Very easy to use, just fit the pads to your body and let them exercise your muscles. 6 optional modes and strength adjustable to help fat burning and muscle growing. Power off automatically after 12 minutes if you forget the time. Super light, wearable and convenient for you to bring anywhere. Specifications: Type: Muscle Stimulator Color: Black Material: PU; Silica Gel Power supply: 2 * AAA batteries (not included) Using mode: A-F (6 modes) Frequency: 1~100Hz Working current: max. 9.8mA Training time: 12 minutes (per training time) Fit for: Unisex Item Size(Muscle Sticker): 19 * 17cm / 7.48 * 6.69in Package Size: 22.5 * 14.5 * 3.5cm / 8.85 * 5.70 * 1.37in Package Weight: 86g / 3.03oz.