describe:1.3 Temperature SettingsThe desk coffee cup heater has 3 temperature settings, one-button switching, the first temperature level is 104F/40C, the second temperature level is 122F/50C, High temperature is 131F/55C. You can adjust the temperature with just the touch of a button. 12 hours automatic shutdown2.Safe and DurableThe desk coffee heater uses a low-power heating body and is made of waterproof tempered steel. It keeps the mug warm, is heat-resistant and fireproof. Large surface and back vents. Never melt and release chemicals. There are 4 non-slip feet on the bottom to help support your cup and prevent spills. Note: Do not pour water on it3.Fit Most CupsThe coffee heating plate has no grooves and a 3.5-inch diameter heating area, suitable for mugs, glasses, porcelain cups, etc. Not suitable for plastic cups, we recommend using flat-bottomed cups for better heating. Covering with a lid also helps retain heat4.Perfect Christmas Gift ChoiceThe desk coffee cup warmer is a great gift for your lover, dad, mom, wife, husband and all your loved ones on Valentine's Day, Thanksgiving, Christmas and New Year5.Reliable Customer ServiceOur coffee cup warmer cup warmer tray is the best choice for Christmas birthdays. If you have any questions, please feel free to contact us. We can provide 24-hour online service. NOTE: The coffee cup warmer will automatically turn off after 12 hours of operation, so you don't have to worry about forgetting to turn it off.Specification:Shell material: ABSRated power: 16WOperation mode: touchpacking list:1 x coffee cup warmer1 x instruction manualNotes:1. Try to use a flat-bottomed cup to heat faster.If the bottom of the cup is uneven, it will heat slowly.2. If the cup is too light, it may not be able to trigger the automatic switch induction.Good choice:Our thermos cup is definitely a good partner and helper to change your drinking life!Keep your cup at your preferred temperature so you can enjoy warm coffee all day long without worrying about something going wrong.