The Matias wireless aluminum keyboard is a slim, aluminum wireless (Bluetooth) keyboard with a similar layout to the familiar Apple Wireless Keyboard. It has three features that enhance your experience compared to the regular Apple Wireless Keyboard: it has a numeric keypad and a rechargeable battery with a typical battery life of up to one year before needing recharging. This keyboard also has the ability to pair to up to four Bluetooth devices at the same time and easily switch between them with the press of a button. Now you can use the same beautiful, great-feeling keyboard for your Mac, iPad, iPhone, Android, or PC. The keyboard even pairs with the optimal layout for each type of device, so when you switch between devices, the keyboard layout is what you expect.