White LED Backlight: Wireless illuminated full size keyboard with bright and evenly distributed white LED-backlit without glare, easy to use in darkness. To deal with different environments and simply does the work. With low-mid-high adjustable 3-level brightness, the backlit can be turned on and off. Bluetooth 4.2 Connection: No extra clutter because it has Bluetooth built in (no dongle required). Just pair the Bluetooth Keyboard with your device and ready for use immediately. Compatible with Microsoft OS, Android OS, iOS, Mac OS, including Cellphone Tablet PC laptop Desktop Apple iPad, iPhone, Macbook and etc. Quick Switch to 3 Devices: This keyboard is able to connect with 3 Bluetooth devices simultaneously. Just click the button to switch the input device within 8 meters opearate distance. Extremely convenient. Rechargeable Battery: Built-in Rechargeable 750mAH lithium battery can last for several months. When the keyboard is not used for more than 30 minutes, it will automatically enter the sleep mode and the indicator light will off. Press any key to use the keyboard again. NOTE: It is charged by a Type C charging cable. Urtra Slim Metal Appearance: Aluminum alloy material and sleek profile, low-profile large keys with number pad offer quiet and comfortable typing. High quality ABS print prevents smooth keycap color abrasion. The durable membrane key switch provides 3 million times key press life.