Microsoft 3RA-00022 Surface Ergonomic Keyboard.QWERTY key life: 10,000,000 actuations per key.
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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