USB Intelligent Constant Temperature Automatic Heating Coaster 1. Material: ABS+electronic components+silica gel 2. Input voltage: 5V 3. Input current: 2A Min 4. Rated power: 10W 5. Power supply: USB plug-in 6. Temperature gear: 1st gear2nd gear3rd gear (button adjustment digital display) 7. Timing function: 8-hour scheduled shutdown 8. Graphene heating film is used to conduct heat to the thermal conductive plate. The heating film quickly converts electrical energy into thermal energy, and the heat conduction is stable. 9. There are three adjustable temperature levels, which can adjust the appropriate temperature according to different drinks. It can be heated or kept warm. 10. Adapt to different cup shapes and compatible with different materials 11. Using new PTC heating elements, lighter weight, faster heating efficiency, giving you a better user experience 12. The healing warm light emits gentle warmth, giving you a peaceful and natural sense of happiness at night. Noiseless heating makes it easier and more enjoyable. 13. Size: 130x37mm, night light thickness 30mm 14. Weight: 109 grams