Product Features: This product adopts 12V safe regulated power supply, microcomputer control, free exchange of 8 modes, adjustable timing within 5-30 minutes, automatic shutdown, multi-function All-round vibration , car room dual-use, portable, can sit or lie down. The main parts of this product: 7 vibration motors, hand control and drive circuit board, power adapter, car cigarette lighter plug. How to use: 1. After power on, press the power button (ON/OFF) to start the machine. 2. Press (Function) to select 1-8 modes, which can be switched cyclically. 3. Press (Timer), select the working time of 15 minutes and 30 minutes, and automatically shut down when the time comes. 4. Press (Intensity), the third gear is adjustable. 5. Press (Heat), the heating indicator light is on, heating.