Smart temperature, heat preservation mode. No boiling. Constant temperature planning, to give the cup the right temperature. The metal plate adopts the fast heating technology, just put the glass on it and it heats up quickly. Heat evenly and quickly, the preservation effect is better. Suitable for a variety of tools and materials. It is recommended to use a flat or thin bottle. Intimate electrical planning, energy saving and environmental protection. Mechanical buttons, easy to operate and portable. Specifications: Material: Plastic Color: Blue, Green and Pink Size: Approx. 10 x 13 x 2 cm / 3.94 x 5.12 x 0.79 inch The temperature of the USB model is only about 45 degrees, Package includes: 1 x heating pad and charging cable