Microsoft Surface Wireless Mouse - Gray - 3YR-00001

Interface: Bluetooth 4.0/4.1 LE Wireless frequency: 2.4GHz frequency range Max Operating Distance: Up to 49 ft. Battery: 2 AAA alkaline batteries (included) Battery life: Up to 12 months Orientation: Right and left-handed Movement Detection Technology: Optical Performance: 1000 points per inch, 30 inches per second, 4000 frames per second Features: Scrolling wheel, Microsoft BlueTrack Technology