Applicable system: The keyboard size is specially designed for Surface Pro. The keyboard supports all Windows systems. You can also use this keyboard to pair with other electronic devices with Bluetooth and Windows systems, but note that the magnetic attachment is only compatible with Surface Pro; Make Surface Pro3/Surface Pro4/Surface Pro5/Surface Pro6/Surface Pro7 function like a laptop: The keyboard attaches physically to Surface Pro via magnetic connection and pairs through Bluetooth. After Bluetooth connection, use mechanical keys and touchpad for a laptop-like typing experience. (This keyboard does not fit Surface Go); Slim and compact design with full-size keyboard performance. Features functional media keys and a large touchpad. Includes 7-color backlighting for low-light use. Charges in 2 hours and provides up to 95 hours of continuous use. Product Name: Wireless Keyboard / Bluetooth Keyboard. Compatible models: Surface Pro3 / Surface Pro4 / Surface Pro5 / Surface Pro6 / Surface Pro7; Usage instructions: 1. Turn on the Bluetooth keyboard by switching the power switch in the lower right corner from OFF to ON. The keyboard powers on and the blue light turns on after 3 seconds. 2. Press the [Link] or [Connect] button next to the switch; the blue light stays on and the Bluetooth indicator begins flashing. 3. Turn on your tablet, go to Settings > Network & Wireless > Bluetooth, enable Bluetooth, search for nearby devices, select the Bluetooth name of the keyboard, and tap Connect. 4. When the tablet displays [Bluetooth pairing request], enter the on-screen code shown on the tablet using the keyboard and press Enter to complete pairing; Bluetooth Keyboard: Equipped with mechanical keys and an extra-large touchpad for improved typing, navigation, and control on Surface Pro; Bluetooth: Uses American Broadcom solution; Features: ABS chocolate-style keycaps, PU leather finish, sleek and premium design; Functionality: Fn key supports multimedia shortcuts; Keyboard features: 7-color adjustable backlighting; Compatibility: Designed specifically for Surface Pro3/Pro4/Pro5/Pro6/Pro7. Supports all Windows systems; Supported protocols: Bluetooth 3.0 / 4.0 / 1.1; Charging interface: USB port; Battery capacity: 450mAh; Operating temperature: -10°C to +55°C; Charging time: 2-3 hours; Usage time: Up to 95 hours; Standby time: Up to 60 days; Keystroke lifespan: 500 million cycles; Bluetooth range: Up to 10 meters; Color: Black; Material: PU + ABS; Dimensions: 29.5 x 22 x 0.5 cm; Package Contents: 1 x Wireless Bluetooth Keyboard with Touchpad, 1 x USB Charging Cable, 1 x User Manual; Note: The package includes only the items listed. Other accessories are not included. Lighting and display differences may cause slight color variations between the image and actual product. Measurement tolerance: ±1-3 cm.