[Magnetic Attachment]Strong magnetic design allows for easy attachment and detachment, effortlessly transforming for Surface Pro 12 from tablet to laptop mode. [Enhanced Typing Experience]Scissor-switch keys with 1.5mm key travel provide a comfortable, quiet, and responsive typing experience, perfect for long work sessions. [Customizable Backlight]Features a 7-color backlight system with 3 brightness levels, allowing you to personalize your keyboard's appearance and work comfortably in low-light conditions. [Precision Touchpad]Large touchpad with palm rejection technology supports all Surface-compatible gestures, including left/right clicks, two-finger zoom, and three-finger task switching. [Bluetooth-Compatible 5.0 Connectivity]Stable wireless connection with a range of up to 10 meters, freeing you from cable constraints for a more flexible work setup. [Long Battery Life]Enjoy over 30 hours of use with backlight off, or 100 hours in power-saving mode, supported by a 500 mAh lithium battery with a 3 million cycle lifespan. Specifications: Model: 3109-AS Dimensions: 32.3 x 22.7 x 2 cm Weight: 376g (keyboard only) Bluetooth-Compatible Version: 5.2 Operating Range: Up to 10 meters Battery Capacity: 500 mAh Charging Port: Type-C Charging Time: 2-3 hours Working Time: >30 hours (backlight on), >100 hours (backlight off) Standby Time: >100 days Key Lifespan: 1 million clicks Operating Temperature: -10 to +55℃ Backlight: 7 colors with 3 brightness levels Special Features: Large touchpad, scissor-switch keys, magnetic attachment