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 devices. Make Surface Pro3, Surface Pro4, Surface Pro5, Surface Pro6, and Surface Pro7 function like a laptop: The keyboard attaches physically to Surface Pro via magnetic connection and pairs through Bluetooth. After Bluetooth pairing, use mechanical keys and a large trackpad for a laptop-like experience. (This keyboard does not fit Surface Go.) Slim and compact design delivers performance similar to a traditional full-size keyboard. Features functional media keys and a large presspad for easy control of your Surface Pro. Keyboard includes 7-color backlighting with night light effect. 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 sliding the 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 and go to Settings > Network & Internet > Bluetooth > Turn on Bluetooth > Search for devices > Select the Bluetooth name of the keyboard case > Tap Connect. 4. When the tablet displays [Bluetooth pairing request], enter the passcode shown on the screen using the keyboard and press Enter. The connection is complete. Bluetooth Keyboard features mechanical keys and an extra-large trackpad to enhance typing, navigation, and control on Surface Pro. Bluetooth technology uses a reliable American Broadcom solution. Key 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, and Pro7. Supports all Windows operating systems. Compatible with Bluetooth 3.0, 4.0, and 1.1 protocols. Charging interface: USB port. Battery: 450mAh lithium battery. Operating temperature range: -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 keystrokes. Bluetooth effective 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 Trackpad, 1 x USB Charging Cable, 1 x User Manual. Only the listed items are included; other accessories are not included. Note: Lighting and display differences may cause slight color variations between the image and the actual product. Measurement tolerance: ±1–3 cm.