Intelligent constant temperature retro knob warm cup mat automatic heating thermal insulation desktop warm cup mat Features: Three speed temperature regulation, the temperature is just suitable for your temperature, intelligent heating cup mat. Small size, only palm size space, feel warm, will not occupy too much space on the desktop, office, dormitory and home, unlimited travel Concave design is safer, and the diameter of cup bottom is larger 90mm. Concave design can prevent accidental sliding and tipping of the cup body. 8-hour intelligent power-off requires temperature and safety, and 8-hour automatic power-off. It doesn't matter to forget occasionally. Gently turning this button can warm up the whole day. The temperature of the first gear is 55 , rotate it again to 65 , and rotate it again to adjust the temperature to 75 , that is, the maximum temperature. Specifications: Name: Cup warmer Material: a high temperature resistant PC material + aluminum alloy Voltage: 110V-220V Power supply mode: plug in Power: 20W Color: as shown in the figure Products include: 1 cup heating