Description Color: gray, white Battery capacity: 90MAH Material: PC, silicone Charging voltage: 3.7V Input port: Micro USB Charging time: 20 minutes Usage time: 60~80h Rated power: 0.1w Features: 1. The toner is carefully designed according to the concept of ergonomics, using modern technology biological pulses and physical toner components, and using the pulse massage function to stimulate the temples to achieve a toner effect. 2.5 massage modes, you can adjust the massage intensity to suit you. 3. This product uses one-button control and convenient USB charging. 4. Power on: Press the power button once, and the instrument defaults to the weakest gear to start. Switch gear: Each time you press the power button, the gear will increase by one, and so on. 5. Shutdown method Method 1: Press from the first time you turn on, and so on to the sixth time you shut down. Method 2: Press and hold the button for 1-2 seconds, the instrument will shut down, and the voice prompt will shut down. Charging instructions: Plug the charging cable into the Micro USB port, the charging indicator light is red, fully charged, and the indicator light is off, indicating that the battery is fully charged (plug the USB to charge but the indicator light is off, please check the power supply) Suitable for: Full-time drivers, drivers, office workers, high school students and above, people who need to refresh their minds. Remarks: 1. Manual measurement error is 2-5g, please do not shoot if you mind. 2. Due to differences in different monitors, the picture may not reflect the actual color of the item, thank you! 3. SKU color is the color of the product packaging Package contains: 1 * Head massager