Features: 1Simple to use, easy to carry, is a good helper in everyday life. Can be used for home, office, coffee shops, restaurants and more 2Waterproof cup mat is made of Al-Mg alloy. It keeps the liquid temperature high at about 55. 3Once you gently touch it, you can switch the machine, control the temperature at will. 4It features automatic power off control for 8 hours to keep safety, you don't worry if you forget to turn it off. 5Suitable for keeping warm coffee, tea, milk, soup, then makes your beverage or food taste good. A essential item in the cold winter day. Specification: Features: 1. Simple to use, easy to carry, is a good helper in everyday life. Can be used for home, office, coffee shops, restaurants and more 2. Waterproof cup mat is made of Al-Mg alloy. It keeps the liquid temperature high at about 55. 3. Once you gently touch it, you can switch the machine, control the temperature at will. 4. It features automatic power off control for 8 hours to keep safety, you don't worry if you forget to turn it off. 5. Suitable for keeping warm coffee, tea, milk, soup, then makes your beverage or food taste good. A essential item in the cold winter day. Specification: Item Type: Cup Mat Material: Al-Mg Alloy + Glass Color: Black Size: Approx. 120 x 120 x 15mm / 4.7 x 4.7 x 0.6in Power: 15 W Insulation Temperature: About 55 Cable Length: 1.4m / 4.6ft Package Weight: Approx. 298g / 10.5oz Packing List: 1 x Cup Mat 1 x Instruction Note: The function of this product lies in heat preservation and constant temperature. It cannot be used to boil water at high temperature. It is not suitable to use double cups or cups with sunken bottom (unable to contact and heat effectively).