Logitech Bluetooth Illuminated Keyboard K810 for PCs, Tablets, Smartphones - Black (Certified Refurbished) This Certified Refurbished product is tested & certified to look and work like-new. The product includes all original accessories and is backed by a 90 day warranty. Logitech Easy-Switch Bluetooth technology: Press one button to instantly switch between typing on your PC, tablet and smartphone Sharp, bright backlit keys: Type easily, even in the dark, thanks to automatic illumination which adjusts to the level of light in the room Stylish design: Compact and ultra-thin with a real brushed aluminum finish and sleek low-profile keys. - Unique Logitech keycap design: Enjoy comfortable, whisper typing Rechargeable: No battery hassles. Use the USB cable to recharge, even while you type.