Features: Strong Compatibility: This wireless keyboard is compatible with Microsoft Surface Pro 8/Pro 9/Surface Pro X 13-inch tablets. It physically connects to the Surface Pro like a laptop through magnetism and also supports BT connection, offering a wide range of uses. Ergonomic Design: The ultra-thin, compact layout and quiet typing feature are ergonomically designed, making your fingers glide more comfortably on the keyboard and reducing the burden on your hands. Two keyboard options: One is a 7-color backlit keyboard, and the other is a non-backlit keyboard, meeting the needs of different environments and personal preferences. High-Efficiency Battery: The built-in rechargeable lithium battery provides about 100 hours of continuous use when there is no backlight and up to 5 hours of use when the backlight is on. The charging time is less than 3 hours, and the Type-C charging port ensures durable and convenient charging anywhere. Detachable and Adjustable Angle: The angle of the keyboard can be adjusted to make typing and viewing more comfortable. The powerful magnetic connection bar and anti-slip keyboard back panel can securely fix your computer. Lightweight and Ultra-thin: The keyboard is lightweight and can be easily put into a backpack, messenger bag, or briefcase, suitable for use on your lap, on a plane, or at a desk. At the same time, this Bluetooth keyboard can also protect your Surface Pro 8/9/X tablet from scratches, dust, and wear. Specification: Optional styles: Backlit / No Backlit Applicable models: Microsoft surface pro8/X/Pro9 BT version: BT 3.0/4.0/5.0 Material: ABS+PU Function: Fn combination multimedia function Charging method: Power supply via Type-C port connection Battery capacity: 450mAh(Backlit model ) / 250mAh(No Backlit model) Operating ambient temperature: -10~55 Charging time: 2-3 hours Usage time: about 95 hours Standby time: 60 days Key life: 500 million times Operating distance: 10 m Product size: 290*225*8mm Product weight: 348g Package size: 345*255*17mm Package weight: 516.5g Package list: 1* Keyboard 1* User Manual 1* Charging Cable