Durability: With a robust, spill-proof design, anti-fading treatment and sturdy tilt, the LogitechMK235 wireless keyboard and mouse combo is built to last Simplicity: The full-size keyboard features a standard number pad and 15 shortcut keys while the optical mouse is equipped with movement detection technology for precise control Plug & play: The mini USB-receiver included provides a reliable wireless connection up to 10 m away, with no need for pairing or software installation to use this keyboard and optical mouse combo Extended battery: Up to 3 years for the keyboard and 1 year for the mouse, depending on use 24 months manufacturer guarantee: For a worry-free user experience that ensures long-lasting performance Upgrade: To Logitech MK540 Combo for increased comfort - scooped keys, palm rest, full-size mouse with soft rubber grips and customizable shortcuts Keyboard Frequency band 2.4 GHz Purpose Universal Number of hot keys 15 Hot keys Yes Windows keys Yes Numeric keypad Yes Keybo