Features: Personalized ultra-slim Bluetooth tablet keyboard. Perfectly suit Microsoft Surface Pro 8 2021 / Pro X 13" Touch-Screen Tablet. The scissor-Switch keyboard and Ergonomic design bring you a pleasing typing experience. Each key sustains up to 3 million keypress times. Responsive Trackpad: The built-in trackpad gives you the touch screen experience, without having to take your hands off the keyboard. Low power consumption, built-in lithium battery. Each key is back-lit to help when used in low light conditions or at night, and adjustable three-color backlit makes it look more cool and fashionable. The keyboard is sturdy with enhanced magnetic stability along the fold so you can adjust it to the right angle and work on your lap, on the plane, or at your desk. Adopts ABS material, Standard Micro interface. Specifications: Material: ABS Standard Micro interface Style: Standard Interface Type: USB Keyboard Standard: 78 Keys 7 Colors LED Illumination Backlit: Red / Green / Yellow / Purple / Cyan / White / Blue. Size : 11.4 x 8.84 x 0.22 inch Sleep Length: 30 minutes Lithium battery: 750mAh Working Voltage: 3.0V - 4.2V Working Current: 2.5mA(max.) Working temperature 10 to 55 degrees cent degree Suit: for Microsoft Surface Pro 8 2021 / Pro X 13 Note: Bluetooth receiver is not included. So an additional Bluetooth adapter will be required if your device is without Bluetooth function. Package Includes: 1 x Keyboard 1 x USB Cable 1 x User manual