Auto Shut Off : Cup warmer will keep your brewed coffee warm for 1h to 12h. Just press the left button to set the holding time at will. The default setting is 8-hour auto shut off. This smart shut off feature is designed to ensure safety. Dont worry about forgetting to turn it off.^Two-level Temperature SettingSimply press the right button, you can control the temperature of your coffee between 122/50 and 140/60. Get this coffee warmer to keep your coffee comfortably warm and easy to drink!^Suitable for Various Cups: Glass, stainless steel cups, ceramic and paper cups are available. The heating plate is up to 3.15 inch. Using a flat-bottom thin-wall cup with cover will deter loss of heat through evaporation and keep your coffee warm till the last sip.^Portable and Energy-saving DesignThis innovative mug warmer is equipped with clear digital display and touch button. Its easy to carry and clean. Maintain the best taste of coffee anytime and anywhere.^Perfect Gift Choice & Customer ServiceNever worry about choosing what kinds of present for your family and friends. It will be the best Birthday gift, Thanksgiving and Christmas Gift. We are committed to provide you with perfect service,welcome to contact us when you need any help.^