Features: Made of high quality aluminum, alloy and glass material, and to use. Adopt PTC thermostatic material to heat evenly and quickly, less energy consumption. Light Weight and compact size, easy to transport and store. Suitable for most stainless Steel cup, bottle, ceramic cup, glass cup, etc.Keep your coffee, tea or other hot.Heat warm up to 55.Never worry about high temperature and high oxidation, useIdeal for use in the home and office, which keeps beverages hot all the time. Specification: Condition: brand new Main material: Aluminum alloy + glass White color Thermostat temperature: 55 Automatic shutdown control: 8 hours Plug: EU 220V plug / US plug110V (optional) Size: Approx. 11.7 x 11.7 x 2.1cm / 4.61 x 4.61 x 0.83 inch Cable Length: Approx. 1.4m / 4.6ft Pac kage List: 1 * Cup Warmer only 1 * user manual Notice: Double-walled cups and dented cups at the bottom are not recommended for this heater for safety!This heater can not be used to boil water at high temperatures!