Ergoguys Matias Wireless Bluetooth Keyboard, Silver

Built using some design cues from Apple's aluminum keyboards, the silver Wireless Aluminum Keyboard from Matias is a wireless Bluetooth keyboard that can pair up to four Mac, iPad, iPhone, Windows, or Android devices, each of which may be switched between with the press of a button. Unlike Apple's wireless keyboard, this version contains a numeric keypad, and the ability of the function keys to control screen brightness, volume, and more has also been retained. For those who need to switch the function keys back to their original duties, there's even an Fn key for doing that.

Unlike other wireless keyboards, which often power down and disconnect to conserve battery life, Matias' offering has been built with a 1600 mAh lithium-ion polymer battery that stays powered on and connected to your system. Its battery lasts for up to one year, with 533 to 1,600 hours of uninterrupted typing time, and up to two years of standby time. Included with this wireless keyboard is a USB charging cable and a limited 1-year warranty.