131℉/55℃ MAINTAIN OPTIMAL TEMPERATURE - The coffee warmer designed to keep your beverage at constant temperature(131℉/55℃) and keep this temperature whole day，which comfortable temperature , enjoy at any time.SAFE AND STABLE - Coffee mug warmer has built-in temperature control chipset module and auto shut-off function. Device will automatically shut off to protect your property and safety.SUITABLE FOR MUTIPLE CUPS - Suitable for metal, enamel,ceramic,glassware,plastic etc.BEST GIFT CHOICEC:The coffee mug warmer is a great gift for lover,dad,mom,wife,husband and all your loved ones on Valentine's day,Christmas and New Year.GUARANTEE&WARRANTY - If our beverage warmer fail to meet or exceed your expectations, you are free to return them within the 60 Days and receive a FULL refund. Any question please contact us