Are you searching of a professional and convenient cup warmer? Our cup warmers can surely satisfy your demands. Using good materials, light, safe and can support longer term to use. Our mug warmer keep your mugs warm, neither too cold nor too hot. Features -Color:Assorted Color -Material:ABS + Glass -Size:13.20X11.80X2.30cm/5.19X4.64X0.90in -Note: without cup and battery. -Rated Power: 10W -Rated Voltage: 5V -Rated frequency: 10 (Hz) -Adjustable: 3 gears - Safe and convenient to use, not easy to break or deform, reusable and can be applied for longtime. - USB charging, heating with use, safety protection, and reducing the probability of safety accidents. - Low power and low voltage, saves electricity and money, but is fully functional, allowing you to at the perfect temperature in winter. - Designed to keep your hot drinks in a suitable drinking temp, not heat your drink very hot. - Perfect for hot coffee, tea, , milk or even a hot cup of soup. Suitable for a variety of cups. Package list: 1 × usb cup warmer 1 × USB cable