Constant temperature heating coaster, 3 levels of temperature can be adjusted, not only can be kept at a constant temperature of 55 by default, but also can be heated to 65 and 75 . USB interface, safe supply, energy saving and low consumptionConcave plate design, suitable for the bottom diameter of the cup less than or equal to 7.6cm, can prevent the cup from accidentally falling off, more secure. Compatible with cups of different materials, glass cups, heatable milk cartons, metal cups, plastic cups, ceramic cups, multi-purpose and multi-scene useCoffee Warmer And Heater -- Our coffee cup warmer can not only slow down the cooling rate of hot coffee, but also heat the coffee to 167F/75C, and keep this temperature all day long. Allows you to enjoy hot drink at any time in the cold winter without waiting. Safe and durable, made of high temperature resistant materials, the heating plate can withstand high temperature heating for a long timeBest Winter Gift Choice -- This coffee / beverage warmer is an excellent choice for you to enjoy hot coffee (hot tea, hot milk, hot drinks) at any time and keep your body warm all day. At the same time, it is also the best gift choice for family and friends on birthdays, Thanksgiving, Christmas and other special holidays. In the cold winter, pass your most sincere warmth and care to family and friendsSmart off for 8 hours, it's okay to forget to turn off occasionallyColour: WhiteMaterial: plasticSize: 11.7 x 2.3cmPackage Contents:1 x coasterOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.