1. Portable USB powered Mug heater - Keep the morning coffee hot at your desk while you work, or keep a cup of hot tea steamy while you relax on the couch. 2. 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). 3. Fits your many different mug sizes. 4. Plug directly into the USB port to recharge, that is, energy-saving and convenient. Lovely shape and excellent. Notice: 1. Coffee mug warmers in general work better the more bottom surface of the mug is touching the hot area. 2. Please choose the perfect flat bottomed ceramics mug , not something tall or of high volume, and put a lid over it.
