Product Description
From the Manufacturer
For use with your Mac as well as your iPod, the sleek, completely cable-free aluminum Apple Wireless Keyboard uses Bluetooth technology, so you're free to move the keyboard just about anywhere within range and wirelessly type away. Use the Apple Wireless Keyboard on your desk, on your lap, or anywhere within 30 feet of your Mac or iPad.

 
The compact, cable-free Apple Wireless Keyboard

Its compact design takes up 24 percent less space on your desktop than full-size keyboards, so you have extra room to move the keyboard around and mouse comfortably alongside of it. You'll also feel a difference when you type on its low-profile anodized aluminum enclosure with crisp, responsive keys. Use the function keys for one-touch access to a variety of Mac features such as screen brightness, volume, eject, play/pause, Exposé, and Dashboard.

The Apple Wireless Keyboard requires just two AA batteries, and its intelligent power management system conserves battery life. So when you're not using the keyboard, it automatically powers down. The instant you start typing, it turns back on. Use the on/off switch when you're away from your computer for a long time.