Microsoft Sculpt Ergonomic Wireless Desktop Keyboard and Mouse - L5V-00001 Cushioned palm rest provides support and promotes a neutral wrist position. This keyboard features Advanced Encryption Standard (AES) technology, which is designed to help protect your information by encrypting your keystrokes.Dimensions for Mouse -Length-3.87 inch. Width-3.13 inch Split keyset design helps to position wrists and forearms in a natural, relaxed position. Natural Arc key layout mimics the curved shape of the finger tips. Domed keyboard design Domed keyboard design positions wrists at a natural, relaxed angle. Separate number pad Separate number pad provides greater flexibility for workspace setup. Includes Keyboard, Mouse, Number Pad, 2x AAA Batteries, Bluetooth USB module. Compatible-Win 10 64 bit,Win 10 32 bit,Win 8.1 32 bit,Win 8.1 64 bit,Win 8 32 bit,Win 8 64 bit,Win RT 8.1,Win RT 8