Adjustable 3-Level Temperature: Our beverage warmer has 3 temperature ranges for you to choose, heating (167 F/75C), constant temperature (149F/75C), warm (131 F/75C). According to your needs, freely adjust the temperature Easy to use: touch the button once, the red indicator light is on, the beverage heater is heating; press it again, the blue indicator light is on, the thermos cup starts to keep warm; touch it again, it will is closed. Smart operation, easy to use Concave plate design: prevents the cup from slipping and tipping over accidentally. For cups with a base diameter less than or equal to 76 mm. Reliable Coffee Warmer: This portable table thermos is made of high-quality ABS, ABS plating and metal, which keeps the thermos heat and fire resistant. The heater makes it possible to heat drinks evenly while keeping them safe and stable. It has 8 hours automatic power off control to ensure safety, if you forget to turn it off, you don't need to worry about Wide Application: Our beverage warmer can be used in home, office, coffee shop, restaurant, etc. Suitable for tableware: metal, ceramic, Enamel, ceramic tile, high temperature plastic, glassware, etc.