<p>USB WIRED CHARGING FUNCTION: The USB mug warmer Powered by any devices with output 5V USB port, such as your computer, desktop, laptop, tablet, mobile power and so on, easy and convenient.Keep your coffee, tea or other hot beverage warm up to 55.</p> <p>HIGH QUALITY USB COASTER WARMER: Warmer plate is Made of high quality walnut wood and metal materials, heating evenly, safe and durable to use.Light weight and compact size, easy to carry and satisfy the needs of the user and keep warm.</p> <p>WIDE APPLICATIONS: Suits for most of cups; such as metal, ceramic,enamel,tile,high temperature plastic,glassware. Advice to use Flat Bottom Cups for better use.high-temp resitant materials made supports long time using.do not worry about high temperature and high oxidation.</p> <p>BEST GIFT CHOICE: USB Port Beverage Warmer very suitable for home and office use, keeping you warm in cold weather.Suitable for ceramic,glass, stainless steel cups. Coaster Warmer will be your fine gift choice to your lover friends on Thanks giving, Valentine's day.</p> 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. Sold by-GONGQ trading 3