USB Heated Palm and Wrist Heating Pad with Vibration Massager, Adjustable Temperature Control, 3 Modes, Portable for Men and Women, Ideal Gift, No Adapter or Battery Required

You can utilize the item by connecting it to a mobile power source using a USB control cable, or opt for three distinct heat settings with a 2A power adapter (the package does not include a mobile power source or power adapter). The red light indicates high temperature, the blue light indicates medium temperature, and the green light indicates low temperature.
Please do not leave the device unattended for long periods of time to prevent accidents. It is recommended to use the device 2-3 times a day for about 30 minutes each time. If you feel uncomfortable during use, please stop using it immediately. Do not use the device while sleeping to prevent burns from low temperatures. Keep the device away from the bed and blankets, ensure good ventilation, and avoid fire hazards.