"Features: 55 all day constant temperature /USB safe power supply Thin and light design, PI heating, intelligent control, power failure protection Can be connected to mobile power, laptop, convenient for outdoor use Small size and easy to carry Just the size of the palm of your hand, the warmth will never leave your hand Specifications: Product name: warm white insulation base Product material: ABS/PC/silicone/glass Rated power: 10W Product size: 132X118X20mm The package: 1*Mini Cup Warmer Usb Coffee Heater(Without cups and other items) Warm Tip : Please be reminded that due lighting effects, monitor's brightness/contrast settings etc, there could be some slight differences in the colour tone of the website's photo and the actual item. Item Measure by hand, it could be 1cm different,your kind understanding will be much appreciated. Note: This product is only used for thermal insulation, panel temperature does not represent the heating temperature, can not be used to boil water"