Safe & Durable -- The surface of the coffee mug warmer is covered with a layer of silicone pad, both beautiful and heat-resistant. The spill-proof design avoids damage and makes cleaning a breeze. The heating plate is 37 inches in diameter and fits most cups..2-12H Timed Auto Shutdown Mug Warmer -- The coffee mug warmer with auto shutdown timer will automatically shut down after 4 hours of continuous operation by default. We set up six options of 2-12h according to different use conditions of users. You can set the automatic shutdown time according to your own needs. More convenient and effectively prevent the safety hazards caused by forgetting to close with the coffee warmer..Coffee Cup Warmer with 3-Tem Settings -- The coffee mug warmer for desk keeps the coffee as hot as you want it to be. There are 3 temperature settings: 170℉/150℉/130℉. You can choose the temperature you want by touching the “Power Button”. With the cup warmer, keeping the drinks warm/hot is no problem..For Most Mugs -- Whether the bottom of the cup is flat or not, our mug warmer for desk can play a good insulation effect. The diameter of the heating plate is 3.7in fitting more cups. For your safety, please do not use heat-labile containers such as paper and plastic cups..Best Gift -- Beautiful appearance design, practical function. The coffee cup warmer will be the surprising gift choice to show your care to your families, lover, or friends on Valentine's Day, Thanksgiving, Christmas, New Year, or other special occasions. No coffee lover can resist the coffee cup warmer for desk.