Matias FK418BTS Wireless Aluminum Keyboard for Mac, Windows, Android Devices (Silver) Keyboard/Keypad Connectivity Technology: Wireless Keyboard/Keypad Wireless Technology: Bluetooth Keys Layout: QWERTY Localization: English (US) Color: Silver Just like an Apple keyboard, the function keys let you control screen brightness, volume, iTunes, and more. Theres even an Fn key, that lets you momentarily change the function keys back to their traditional duties, when you need them. No expense was spared to make this the best Bluetooth keyboard possible. That includes putting a <span class="a-text-italic">much</span> bigger rechargeable battery in it than we had to  1,600 mAh. Thats 5x to 12x bigger than whats on most other wireless keyboards; big enough to last a year, on a single charge. Other wireless keyboards will often power down and disconnect to conserve battery life  leaving you waiting, <span class="a-text-italic">each time</span> they reconnect.