Exquisite USB Powered Portable Desktop Coffee/Tea Cup Mug Warmer Beverage Heater Tray Pad Material: ABS + Metal. Color: White . Power Supply: USB-power. Working Voltage: 5V Item Size: approx. 11 x 11 x 2.5cm / 4.33 x 4.33 x 0.98inch. Package Weight: Approx. 109~111g Package Content: 1 x Cup Warmer Pad