7-color backlight, 3 levels of brightness adjustable for low, middle and high.The keys under the backlight will become brighter and semi-transparent, providing you with a different visual typing atmosphere. Equipped with a smart touchpad that can accurately control and navigate, realize the combination of tablet and computer functions, and enjoy an excellent notebook experience. The scissors key and complete function keys are more suitable for fast and smooth typing, bringing you a brand new typing experience. Supports a maximum distance of 10 meters and enjoy a reliable wireless BT connection. After the first connection is successful, the keyboard will automatically connect to your Surface Pro when you use it again. The built-in battery of the backlit keyboard for Surface pro can be charged through the Type-C interface. After fully charge, the keyboard can work continuously for 50 hours and 5 hours without backlight and backlight.