USB Coffee Mug Heater Milk Tea Water Constant Temperature Coaster For Home Office Cup Warmer DC 5V hear in on 1. This product can solely hold warm, but cannot be heated. It can keep constant temperature heating, and the outside heating temperature is between 80-88 degrees. The water temperature within the container could be saved at about 50 degrees, however the ambient temperature and container genre may have an impact on the water temperature. Uneven cup bottom, thermos cup, blow-molded bottle and cup with thick backside will impact heat preservation, so it isn't meant to be used. Support notebook computer USB socket and mobile calories transport with output above 5V1 。 【Home And Office Use】Enjoy hot beverages anytime, maintain the liquid temperature around 55℃, maintain your coffee and tea sizzling all of the time dependable espresso cup hotter for table and kitchen height will ensure your favorite coffee/Tea and Soups can be maintained at excellent temperature.【Easy to Use】The coaster simply needs to press the change to turn on the insulation system, which is terribly convenient, and you'll bask in sizzling tea/coffee/milk at any time within the office.【Widely Used】The product is small and straightforward to carry, right for parties, offices, homes, restaurants, bars, studies, beaches, sports, travel.【Easy-to-Clean Portable-to-Carry】The surface of the heating plate is easy to clean. The coffee hotter is light-weight and could be a ideal desire for reward on Birthday, Valentine&;s Day, Mother&;s Day, Thanksgiving, Christmas or other holidays. Let this mug hotter warm your belly and your heart! Specification: Packing: English boxed Power delivery mode: USB interface Material: plastic+PU Product size: 10*10*1 Packing size: 14*11*2 Weight with package: 110g Voltage: 5V/2A Power: 10W Surface heating temperature: 80-88 degrees Constant temperature: fifty five degrees Shipping equipment list:USB thermal pad *1