Product description Material: ABS+glass panel Colour: white Size: 132 118 20 mm/ 5.2 4.6 0.8 in Voltage: 5V = 2A Rated power: 10W Power supply mode: USB Package Include: 1 x Coffee Warmer Plate 1 x USB Power Cord 1 x User Manual 1.Adjustable Temperature: With high-tech frequency conversion heating element, you can adjust the temperature of coffee mug warmer to 1- 3 gear according to your needs, so that the coffee heating speed is different, and the heat preservation effect is different, which is safe and reliable. 2. Auto On/Off: Coffee cup warmer for desk has the gravity-induction, so after turn it on, put your mug on the surface of the cup warmer will start to heat. By removing the mug, tea cup warmer will shut off automatically. Besides, it with Drink water reminder. 3. Maintain Optimal Temperature: No matter the drink is super-hot or cold, smart mug warmer for office will keep the temperature of your drink about 131F/ 55C, it is the most appropriate temperature for people. 4.Small and light: Simple and nifty cup warmer plate will make sipping your hot coffee a more enjoyable experience. It can use ceramics mug, glasses cup, plastic bottles, boxed drinks heat cocoa, coffee, milk,water, beverage, etc. Convenient for your life. 5.ConvenientEasy to carry, small, doesn't take up much desk space. Easy to carry, can be taken with you. Use more convenient and safer. Apply to perfect gift for Thanksgiving, Christmas, Birthdays, Valentine's day and more.