Features: 1CONSTANT TEMPERATURE: Intelligent micro switch, 180 counterclockwise rotation, constant temperature, refuse to hot and cold 2THREE LEVEL TEMPERATURE ADJUSTMENT: One key operation, 55, 65, 75 temperature adjustment, real time display status 3UNIFORM AND FAST: The heating film is heated evenly, and the PTC rapid heating technology heats up quickly 4WIDELY COMPATIBLE: Compatible with most materials cup, flat, thin bottom appliance heating faster, to meet all your love 5PRACTICAL AND PORTABLE: Forget proof design, 8 hours automatic shutdown, energy saving 20W small power, compact and light, does not occupy space, easy and portable storage Specification: Item Type: Heating CoasterFrequency: 50HzPower: 20WTemperature Adjustment: 55, 65, 75Material: ABS, aluminum alloyWeight: 328 g / 11.6 oz(approx.) Package List: 1 x Heating Coaster