[ http://www.ankaka.com/cup-warmer-and-usb-hub-with-clock-usb-powered-cupmug-warmer_p888.html ] China Manufacturer Specifications * Main Function: Warming plate for ceramic, glass and metal cups/mugs * Power: USB port of computer * USB Cable: 36 inches (90cm) long * Heating Plate Temperature: standard operation 50~55 C * Systems: Windows 98SE / Me / 2000 / XP / Vista (32 bit version only) * Power Source: Computer USB for warming plate and hub, button battery for clock * Energy Usage: approx 2.5W * Dimensions: - Heating Plate: 80mm diameter (3.25 inches) - Whole Unit: 135mm x 35mm diameter x height (5.5" x 1.25") [ http://www.ankaka.com/cup-warmer-and-usb-hub-with-clock-usb-powered-cupmug-warmer_p888.html ] To see more Ankaka Wholesale USB Accessories: [ http://www.ankaka.com/Wholesale-usb-accessories_c10071 ]