Coffee Cup Warmer for Desk with 3 Temperature Setting, Cup Warmer for Coffee/Milk/Tea/Beverage /Chocolate, Smart Coffee Mug Warmer for Desk Safer & More Reliable: The mug warmer has a built-in gravity sensor switch, thanks to the microgravity technology, when you remove the cup from working coffee warmer, the mug warmer will go into standby, if your cup is put back within 10 minutes, the coffee mug warmer will automatically on and keep working, else the coffee mug warmer will automatically shut down. Coffee Cup Warmer with Auto Shut Off: The coffee warmer for desk auto shut off has 6 timing functions( 2, 4, 6, 8, 10, 12H), the coffee cup warmer will shut off automatically after continually working the timer which is set by touching the timing button, no worry about forgetting to turn it off, This feature prevents safety issues and helps not consume electricity when not in use.