USB Coffee Mug Warmer

This mug warmer can turn hot water into warm water, and heat cold water. Keep or warm up the liquid temperature to as high as 131F, flat-bottom will get the best warming performance. Coffee warmer through micro gravity induction switch to control temperature, no need to shut off. Coffee cup warmer plate have no groove, so it can fit most cups, such glass cup, stainless steel cup, Ceramic cup etc. We recommend using the cup with flat bottom for better heating results.