1) With charge function, in built 10 sets chargeable battery, plug AC Adaptor to charge, no need special charger, it can use about 2 hours when the battery is full 2) 5pcs vibrating motors with LCD and 4 kinds of vibration massage modes 3) 8 levels timer function / each 5min (from 5min to 40min) 4) between two motors with 5 pcs magnets, total is 20 pcs 5) With AC adaptor and cigarette lighter using in automobile 6) Belt size (L x W): 129 x 14cm 7) Input: AC 220V / 110V, 50Hz / 60Hz 8) Output: DC 12V, 500mA 9) Rated power: 5.5W