Kitcheniva Electric Coffee Mug Warmer CupFeatures: 131 55 Temperature Control System: This coffee warmer is designed to slow down the cooling speed of hot beverages, keep or warm up the liquid temperature to as high as 131 55(Note: 131 55 is best for drink!). Intelligent Auto on & off: This Cup warmer control temperature through the micro gravity induction, no need to shut down manually. When you put the mug on, it will automatic heat and enter the constant temperature working state; when