Microsoft Wireless Desktop 850

Type: Wireless
Compatible With: Microsoft Windows 10 / 8 / 7, Mac OS X v10.4.x – 10.10
Battery life: Keyboard: up to 15 months, Mouse: up to 8 months
Wireless frequency: Keyboard: 2 AAA alkaline batteries (included), Mouse: 2 AA alkaline batteries (included)
Color: Black
Legal Disclaimers: Advanced Encryption Standard (AES) is an electronic data encryption specification that was established by the U.S. National Institute of Standards and Technology (NIST). It was subsequently adopted by the US federal government as an approved encryption technology under the FIPS-197 standard.