Smart Coffee Warmer Constant Temperature Usb Thermal Insulation Base Insulation : HATE WHEN IT GETS COLD? DONT LET THAT HAPPEN! 55 constant temperature heating gives you more degree of warmth. Due to different cup materials and different contact areas, the temperature has a certain difference. Keep it at about 55 The glass-ceramic glass panel adopts a high-strength glass-ceramic substrate imported from Germany. The bottom is designed with 2500 glass spheres to enhance the light wave reflectivity. Better heat transfer efficiency and electric energy conversion rate than ordinary glass and metal. Intelligent control: All functions can be controlled intelligently at the of a fingertip, intelligent reminders to drink water, third gear temperature, and power. Do n't worry if you forget to shut down, it will automatically power off The USB interface provides a safe power supply, which can be into a conversion / into a computer / into a mobile power supply. It is recommended to use a 5V-2A adapter or socket to achieve the best thermal insulation effect The versatile cup does not pick, holding ceramic, glass, metal and other materials, the size of the palm space, easy to carry, warm and never leave your hand. Specifications: Rated input: 5V-2A Rated power: 10W Product material: ABS / PC / silicone / glass Product size: 132X118 20mm Product Included: 1x Smart Coffee Warmer