The Matias Backlit Wireless Multi-Pairing Keyboard for PC is a slim, wireless (Bluetooth) keyboard. Features : It has a numeric keypad It has a rechargeable battery with a typical battery life for the keyboard operations of 3 months before needing charging, and a separate rechargeable battery for the backlight that will last a few days up to 2 weeks depending on usage. Even when the backlight battery is drained, the keyboard still works. Our intelligent electronics mean that only one cable is needed to recharge the keyboard and backlight battery, with each battery getting just the power it needs, It has the ability to pair to four Bluetooth devices at the same time, and easily switch between the four devices with the press of a button It has backlighting. You can control the brightness and of course turn it on or off depending on your needs. It has a high-end plastic case.