Logitech MK235 Wireless KeyboardKey features of the Logitech MK235 Wireless Keyboard: 1. Full size keyboard layout Includes a numeric keypad Standard key arrangement for easy typing Function keys for quick access to shortcuts 2. Wireless connectivity Uses a 2. 4 GHz USB nano receiver Plug and play setup (no software required) Stable wireless range of up to about 10 meters 3. Long battery life Keyboard: up to 36 months Mouse: up to 12 months Uses replaceable AA AAA batteries 4.