A Usb-Powered Heating Neck Pad, a Neck Heating Massager, Suitable for Home And Outdoor Use, with Three Heating Levels, Unisex, And Not.

This device can operate with a USB control cable linked to a portable power source, or it can utilize three distinct heating levels with a 2A power adapter (note that the package does not include a portable power source or power adapter). The red light indicates high temperature, the blue light signifies medium temperature, and the green light represents low temperature.
Notice 1. To prevent accidents, do not leave the device powered on for long periods without supervision. It is advisable to use it 2-3 times daily for approximately 30 minutes. If you experience any discomfort, please discontinue use immediately. 2. Avoid using the device while sleeping to prevent the risk of low-temperature burns. Ensure that you are not near bedding or blankets during use, maintain good ventilation, and take precautions against fire hazards.