Feature:Helps to tone, tighten, shape and strength body muscles and keep fit with adopted EMS (Electrical Muscle Stimulation) technology Directly applies to abdomen, arms, legs, waist or wherever you want to train the muscles with adhesive conductive gels 6 vibration modes and 10 intensity levels available 12 minutes per session, 1-3 sessions per day A day of EMS exercise equals to 1500M running, 30 minutes of sit-ups, 30 minutes of swimming Simply wear it while carrying on with your daily tasks or just sitting back and relax for muscle training and body slimming Includes an abdominal belt and two arm/leg belts that conform with body curves for tight contact Battery operated Specification:Materials: Belt: synthetic leather, Gel; Remote: ABS plastic Frequency: 1-100Hz Output current: 9.8mA maxIntensity levels: 10 levels Vibration mode: 6 modes (A-F)Working time per session: 12 minutesBattery required: 2 pcs of 1.5V AAA batteries (Not included)Large belt size: 7.5" x 6.7" /19 x 17 cm (L x W) Small belt size: 7.9" x 2.8"/20 x 7 cm (L x W)Remote control size: 2.4" x 3" x 0.8"/6 x 7.8 x 2 cm (L x W x H)