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 13 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. 1 x keyboard1 x Power Supply Line1 x User Manual Item Type: Wireless Bluetooth KeyboardMaterial: ABS, PUBattery Type: Lithium Ion Battery 402030 (Ship with Inbuilt Battery) Battery Capacity: 350 mAhColor: BlackSuitable 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 WaysSupport Protocol: Bluetooth 3.0, 4.0, 1.1Wireless Distance: Approx. 10meter / 33ftCharging Interface: USB CFunctional Features: FN Combination of Multimedia Functions