Description: 1. Material: PVC 2. Size: 9 cm in diameter, USB cable is about 1.2 meters long 3. Power: USB powered 4. Uses: epoxy heating pad, winter heating pad, cup heating pad 5. How to use: connect the USB cable to the computer or the 5V charging port, and the coaster will start to heat. Put the cups that need to be kept on the coasters to play the role of heat preservation. Unplug the USB cable when not in use to extend the life of the product.
