Use: This portable electric heating pad is USB-powered for convenient charging. It features three adjustable temperature settings and three high-frequency vibration modes, allowing you to select the preferred option based on your needs. Automatic shut-off design: The heating pad is equipped with an automatic shut-off function. If no movement is detected within 30 minutes, the device will turn off automatically to ensure safety and well-being during use, especially if you fall asleep. To restart, simply turn the device on again. Portable: Compact and lightweight, this heating pad is easy to carry and can be used anytime, anywhere. Note: The heating pad generates heat quickly and efficiently. It is recommended to start with the lowest temperature setting when using the product for the first time. Avoid direct skin contact—always place a cloth or barrier between the device and your skin. Application: Suitable for various daily activities such as resting, reading, driving, or working. The design is washable and resistant to deformation. With three adjustable heat levels, it helps support comfort, soothe cold hands and feet, and relieve menstrual discomfort.