Features: 1Constant Temperature: Under working condition, the hot water is reduced to warm water, and the cold water is heated, and the constant temperature is 55. 2Anti Scalding: Thicken the anti scalding silicone pad and place the silicone pad on the base of the coaster to prevent the panel from getting hot to your hands. 3Automatic Power Off: The coaster will automatically power off after 8 hours of continuous work, sometimes you don't have to worry too much about forgetting to turn it off. 4Widely Applicable: The cup heater is suitable for heating and heat preservation of various materials such as ceramic, glass, metal, etc. 5Portable: Cute appearance mug warmer, small and exquisite size design, comfortable hand feel, convenient to go out and carry, start a warm life anytime, anywhere. Specification: Item Type: CoasterMaterial: ABSGross Weight: Approx. 241-247g/8.5-8.7ozPower Cord Length: Approx. 130cm/4.2ftPower: 18WControl Method: Touch Package List: 1 x Coaster1 x Manual Note: 1. Please use a flat bottomed non double layer cup with this product, so as not to affect the effect.2. Manual measurement, please allow 0.40.7in error.