Wireless office keyboard in full-size layout including cursor and numeric keypad. Ideal for use in open-plan offices or at home with 2.4 GHz RF technology (range up to 10 m). Fully reliable with low-noise keys and durable key labelling, capable of up to 10 million keystrokes without loss of input quality. GS certified (Tested Safety). Useful features include sturdy detachable feet for height adjustment, a non-slip underside, and 4 additional quick-access keys (calculator, e-mail, browser, and sleep mode). Quick and easy Plug & Play installation: simply insert the extra-small nano USB receiver into the USB port of your end device. Practical battery status display indicates when a battery change is needed. The keyboard requires one AA battery (included in delivery).