Features: 1.Applicable Models: Designed for Microsoft Pro 7 Plus (2021),for Pro 7 (2019),for Pro 6 (2018),for Pro 5th generation (2017),for Pro 4,for Pro 3 12.3 inch tablet with slightly dispersed keys for a more familiar and efficient typing experience. 2.Wireless Bluetooth Technology: Wireless Bluetooth technology, provides high speed connection with signal distance up to 33ft. Separate keys and scissor switches will make your typing as comfortable as on a laptop, each key can support 5 million keystrokes. 3.C Charge:The charging cable connects via a C Charge cable, and the built in 350mAh battery supports continued use for 35 hours on a full charge of 2 hours. it automatically goes into sleep mode when not in use for 15 minutes. Press any key for 5 seconds to activate. 4.Touchpad: The built in touchpad of Portable keyboard gives you a touch screen experience without taking your hands away from the keyboard, making it easier to operate. 5.Ergonomic Design: Key core, PU leather, ergonomic design, simple and compact layout, quiet typing function, make your hand feel more comfortable while typing and reduce the burden on your hand. specification:Item Type: Wireless Bluetooth Keyboard Material: ABS, PU Battery Type: Lithium Ion Battery 402030 (Ship with Inbuilt Battery) Battery Capacity: 350 mAh Color: Black Suitable for: Keyboard Size Specially Designed for Microsoft pro3, for pro4, for pro5, for Pro6,for Pro7,for 7 Plus, Specially Designed, Keyboard Support Full for Windows System, Can Be Used in Many Ways Support Protocol: Bluetooth 3.0,4.0,1.1 Wireless Distance: Approx. 10meter / 33ft Charging Interface: USB C Functional FN Combination of Multimedia Functions PackageList: 1 x keyboard 1xPower Supply Line 1 x User Manual