SAFE AND ENVIRONMENTALLY FRIENDLY-Uniform insulation, fast heat, cup heater can prevent coffee or water leakage, when the power is off, can be placed in the heating zone to prevent the hand, can also be used as a cover to prevent heat Lost. more convenient INTELLIGENT AUTO ON&OFF-Thanks to the microgravity technology, this coffee warmer can shut off/on auto. Put mug on automatic heat zone, the cup warmer work, remove mug the warmer plate turn to stop heating.( MUG NOT INCLUDED) MAINTAIN OPTIMAL TEMPERATURE-This mug warmer can turn hot water into warm water,and heat cold water. keep or the liquid temperature to as high as 131Fahrenheit/55Celsius, suitable for tableware: metal, ceramic, enamel, tile, high temperature plastic, glassware etc. Flat bottom cup is better to keep warm. LONG SERVICE LIFE-coffee cup heaters use heaters with low power consumption, thermal focusing, fast heating. Please don't expect coffee warmer as a heater or keep your coffee super hot. Life of up to one hundred thousand hours. BEST GIFT CHOICE: Keep the beverages (Coffee, Tea, Milk etc) warm whole day, making it a great gift for Friend, family, colleague and all your loved , Thanksgiving and Christmas, and other special occasions to express your sincere care.