1. USB powered, no batteries needed. 2. Plug and Play, no need to install extra driver. 3. Easy installation and easy operation. 4. Keep your hot coffee, tea, or other beverage warm, temperature range: 40 to 80 degree. 5. Decorative warmer cup use for coffee, tea, hot cocoa, Soup, water, milk and more. (note: cannot be used to heat up beverages, just used to keep it warm). Package include: 1 x Cup warmer (cup not included here)
