Compatibility: Designed only for Surface Pro 7+/7/6/5/4/3(12.3 inch). This surface pro keyboard pairs seamlessly via Bluetooth, transforming your surface into a laptop experience. Always confirm your Surface model before purchase 7-Color Backlight & Marathon Battery: Customize your workspace with 7 backlight colors and 3 adjustable brightness levels. A built-in 750mAh battery delivers 180hrs runtime (backlight off) or 6hrs (backlight on). Charges fully in