This sleek Microsoft PT3-00001 Microsoft Wireless Desktop is contemporary, modern and minimalistic. It has quiet-touch keys for a serene typing experience and a full-size mouse for comfortable, precise navigation. This symmetrical wireless desktop 900 USB for computers is compatible with English North America USB wireless systems and uses AA and AAA batteries. It also includes Advanced Encryption Standard (AES), which is designed to help protect your information by encoding your keystrokes. Both the keyboard and the mouse have an average battery life of two years for long-lasting use. This Microsoft desktop keyboard has a USB keyboard host interface and pointing device host in order to facilitate wireless connectivity without interruption. Lose the unsightly appearance of inconvenient cables on your desk or work area with this device. The Microsoft PT3-00001 Microsoft Wireless Desktop is supported by several operating systems, such as Windows 7 and 10 and Mac OS.