Compatible with Surface Pro 4, Surface Book, Surface Studio Natural arc and slope Double-cushioned palm rest covered in stunning Alcantara Interface: Bluetooth Low Energy compatible 4.0/4.1. Operating system: Windows 10: Works with Bluetooth Smart Ready Device with Human Interface Device (HID) support.Top-line system requirements: Requires a PC that meets the requirements for and has Windows 10 Wireless frequency is 2.400 MHz to 2483.5 MHz. Wireless range is up to 32 feet