🔥【55-65℃ Constant Temperature】This mug warmer has a built-in gravity sense switch and has an on/off display that is easy and convenient to use. And the electric coffee cup warmer heats at constant temperature of 55-65℃ which is an ideal temperature to use. 🔥【Fit Various Cups】This coffee warmer is suitable for ceramic, glass cups. It is recommended to use cups with lids, thin walls and flat bottoms for optimal insulation. No need to worry about occasional spills, it is effortless to clean. 🔥【USB Powered and Portable】This coffee warmer features USB port which is convenient to use. The electric coffee cup warmer measures 14×11×2cm and the heating part of 9×9cm that is compact and portable. 🔥【Wide Application】This coffee warmer is suitable for heating coffee, tea, milk, hot cocoa, soy milk and more. With this electric coffee cup warmer brings warmth in cold winter. And it is perfect for sharing with friends. 🔥【Ideal Gift】This coffee warmer is designed with a minimalist wood grain appearance that is beautiful. It is an ideal gift for friends, family or loved ones on Valentine's Day, Thanksgiving, Christmas, New Years, Birthdays, Mother's Day, Father's Day, etc.