Key Features . Advanced 2.4 GHz wirelessLogitech unifying receiverCarry-around mouseEight hot keysFull-size spill-resistant keyboardPlug-and-Play simplicity . Advanced 2.4 GHz Wireless Work or play in more places. The wireless connection virtually eliminates delays dropouts and interference and gives you a range of up to 10-meters range. Wireless range may vary due to environmental and computing conditions. Compact Mouse Take the mouse with you. This comfortable mouse fits easily into computer bags and pocket to travel with your computer. Extended Battery Life A 36-month keyboard and 12-month mouse battery life-plus on/off switches-means you can go for months without the hassle of changing batteries. Keyboard battery life calculation based on an estimated two million keystrokes/year in an office environment. User experience may vary. Mouse battery life may vary based on user and computing conditions. Eight Shortcut Keys Instant access to media controls-movies music Internet e-mail play/pause volume and more-are one touch away. Full-Size Keyboard The full-size keyboard with number pad directional keys and nine F-keys is comfortable convenient and built to last. Long-Range Wireless Fast reliable connection up to 10-meters with virtually no delays or dropouts thanks to Logitech Advanced 2.4 wireless technology. Wireless range may vary due to environmental and computing conditions. On-The-Go Mouse Take this compact mouse anywhere your computer goes. Long Battery Life Go for months without changing batteries. On/Off switches help conserve battery use..