Microsoft Modern Mouse Bluetooth Warranty 1-Year by Microsoft

Tech specs Connection Interface Bluetooth® 4.0 Wireless frequency 2.4 GHz frequency range Wireless range 32.8 feet (10 meters) in open area and 16.4 feet (5 meters) in office environment Compatibility Microsoft Windows 10 / 8.1 / 8 Must be BT4.0 enabled. Dimensions 4.53 x 2.52 x 1.32 inches Weight 3.21 ounces (including batteries) Battery 2 AAA alkaline battery (included) Battery life Up to 12 months Warranty 1-year limited warranty