Logitech Wireless Combo MK270. The reliable wireless combo with a tiny Logitech plug-and-forget receiver. You get a reliable connection up to 10 meters away, with virtually no delays or dropouts even in the busiest wireless environments, thanks to Logitech Advanced 2.4 GHz wireless connectivity. Wireless range may vary due to environmental and computing conditions. The Logitech receiver is so tiny, you can plug it in once and forget about it. Plus the mouse features a built-in storage compartment, so you can take your mouse wherever you use your computer. A 24-month keyboard and 12-month mouse battery life, plus auto-sleep and on/off switches mean you can explore QQ, shop Taobao and search Baidu 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. Want to turn up the volume on a song. Or check out your favorite website. It's all at your fingertips with eight hot keys for instant access to the Internet, e-mail, play/pause, volume and more. You'll be comfortable with this keyboard thanks to the low-profile, whisper-quiet keys and standard layout with fullsize F-keys, number pad and arrow keys. Carry-around mouse You can take the sleek mouse anywhere you take your computer?thanks to its comfortable size and the tiny nano-receiver that stores in the mouse.