Adjustable 3-Levels Temperature: Our beverage heater has 3 temperature ranges for you to choose, Heating (167 F/75C), Constant temperature (149F/75C), Keep warm (131 F/75C). According to your needs, freely adjust the temperature Easy to Use: Touch the button once, the red indicator light will light up, the beverage warmer is heating; Touch it one more time, the blue indicator light will light up, the beverage warmer will be temperature preservation; Touch it again, it will be shut off. Smart operation, easy to use Concave Plate Design: Can prevent the cup from accidentally slipping and overturning. Suitable for cups whose bottom diameter is less than or equal to 76mm Reliable Coffee Warmer: This portable desk mug warmer made of high quality ABS, ABS plating and metal, keeping cup warmer heat-resistant and fire-resistant. The heater allows it to evenly warm beverages while remaining safe and stable. It features automatic power off control for 8 hours to keep safe, you don't need to worry if you forget to turn it off Wide Application: Our beverage warmer can be used for home, office, coffee shops, restaurants etc, suitable for tableware: metal, ceramic, enamel, tile, high temperature plastic, glassware etc.