✔Long press the On key for 2 seconds to start the machine. ✔Press ON key to switch modes Three modes can be cycled automatically by pressing ON key for each mode Vibration mode and vibration intensity are different. ✔The default working time after starting is 15 minutes, and the machine will automatically shut down after working for 15 minutes. ✔Battery Type: Polymer Battery ✔Rated Power: 5 W ✔Batter Capacity: 500mA ✔Charging Interface: Micro USB