USB heating coaster portable intelligent three-speed heating coaster automatic power off heating coaster 1.USB Beverage Warmers Size:132X118X20mm USB Cup Heater colour:white 2.USB Cup Mug Warmer Material:ABS, ceramic, tempered panel3.Automatic power-off protection, even if you forget to shut down, you dont need to worry about automatic power-off. 4.Intelligent control of multi-level temperature adjustment with fingertips, easy and intelligent control of all functions. 5.Suitable for multi-function, ceramic cups, glass cups, metal cups, etc., suitable for coffee, tea, milk and other beverages you want to keep warm. "all Products From Us Have Undergone Strict Quality Checks. if There Is Any Quality Problem Or You Are Not Satisfied With The Product contact Us. we Will Give You The Best Solution.