A cup warmer for you to keep your coffee or tea or beverage or beverage or hot Enjoy it freely.If you work with a computer and like to have coffee or tea while working, this cup warmer USB drinks can keep your drink warm by plugging it into your computer Low-power constant temperature control system keeps your drink at just the right temperature. Overheat protection - when the surface temperature reaches 90, it will automatically shut down, safely and securely Suitable for tableware: metal, ceramic, enamel, tile, high temperature plastic , glassware, etc. Item Specification Material: PC, PU, Metal Surface Heating: 80-85 Constant temperature: 55 Power: 7.5W Current: 5V or 1.2A USB cable: 1M Item Size: 10.5x10.5x1.2cm Net Weight: 85g Package Included 1 x USB Coffee Mug Holder NOTE: Cup tempera can only keep au hot but not the heat. The constant temperature heating can maintain the surface heating temperature between 80-88 The water temperature in the container can be maintained at around 50, but the ambient temperature and the style of the container will affect the water temperature The uneven bottom of the cup, the thermos cup and the thick-bottomed cup will affect the heat preservation. It is not recommended to use. Support computer USB plug and output 5V, 1.0A or more mobile power supply CAUTION: Keep out of the reach of children and pets. USB Mug Warmer - Artificial leather heating plate, reaching surface temperature of 85 , overheat protection Constant temperature is 55. Electric Heating Coaster - Efficient concentrated heating ensures even heating in minutes, keeps the best temperature for taste. Leather surface design artificial, unlike other metal surface products that are easy to burn your hands Overheat Protection - Built-in thermostatic circuit, automatically shut down when the temperature exceeds 90, safe for use. USB Powered - Plug and play, suitable for any device with USB port. 1M USB cable. Low power consumption of 7.5W. Widely used - Suitable for multi-purpose, ceramic cups, glasses, metal cups, etc. Suitable for coffee, tea, milk and other drinks you want to keep warm.