Simple and elegant in appearance, this product is the perfect accessory for enjoying drinks and in the office. The mug warmer keeps your mug warm, can enjoy hot tea, and other hot beverages slowly. The mug warmer helps you keep your coffee, milk or other beverages warm. 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 - Adopting from safe material, which is lightweight, with and good workmanship. - The cup warmer maintains with right temperature for coffee, milk, water and other beverages throughout the day. - This drinking cup heating coaster can be used in home, office, dorm and meeting room. - Small size, light weight, does not take up a lot of space, can be easily carried, perfect for daily use. - Heats evenly and heats up faster, allowing you to enjoy beverages at right temperature anytime. Package list: 1 × usb cup warmer 1 × USB cable