CONTOUR Balance Keyboard BK Wireless-PN 80021788 102102 Product Description: Contour Balance - keyboard - Pan Nordic - black Input Device Device Type: Keyboard - ergonomic Interface: USB, 2.4 GHz Wireless Receiver: USB wireless receiver Connectivity Technology: Wireless Localization and Layout: Pan Nordic Numeric Keypad: Yes Colour: Black Dimensions (WxDxH): 39.2 cm x 11.9 cm x 2.05 cm Weight: 580 g Manufacturer Warranty: 2-year warranty