The EWCEFIC 40W Thermostat Coaster features a mechanical rotary thermostat that provides 9 levels of smart thermostat to ensure your beverage will always be at its ideal temperature Dual digital rendering technology visualizes the current temperature and features a 4-hour auto shut-off function, and a waterproof heating plate for safe use The touch button design supports 1-12 hours scheduled switch, not only save energy and environmental protection and practicality perfect combination, but also perfect for busy modern life rhythm Safe material, exquisite workmanship, and colorful light will keep you happy all day, and the perfect gift for coffee lovers Products have strict testing standards, quality control, FCC and UL double certification, ensure consumers have a perfect shopping experience and after-sales service Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.