Feature1.Constant temperature insulation, uniform heating, rapid heating, one-button operation, three-level temperature adjustment at will, keeping your drinks warm, and convenient for you to enjoy hot drinks anytime, anywhere.2.The grooved design can hold your bottle firmly and prevent it from accidentally slipping and overturning.3.It runs silently, giving you a cup of warm hearty drink in the cold winter without disturbing your work or sleep.4.Suitable for cups of various materials, such as glass cups, milk cups, plastic cups, ceramic cups, etc., to meet your different needs.5.The 8-hour intelligent automatic power-off function can ensure your safety even if you forget to turn it off.6.The small and exquisite coasters are easy to carry, suitable for homes, offices, hotels, dormitories and other places, making your life easier.Specifications:Material: ABS+metal+electronic componentsColor: green whiteSize: 12*1.5*2.3cmWeight: 125gPacking size: 14.5*12*2.7cmInput voltage: 5VInput current: 2ARated power: 10WPower supply: USB direct plug power supplyTemperature class: 55-65-75Use time: about 8 hoursPacking List:1* constant temperature coaster1* Chinese and English User Manual