Targus AMW620AP-50 Wireless 4-Key BlueTrace Mouse (Black)

2.4 GHz wireless technology 1,600 DPI optical sensor for a perfect response to mouse movements BlueTrace technology combines the power of an optical mouse with the precision of a laser mouse for remarkable tracking on almost any surface DPI adjustment (3-Level: 800/1200/1600) Wireless USB receiver stores on bottom of the mouse so it’s never lost and always ready to use Energizer® MAX AA batteries included