E-Blue EMS117BK AirFinder Black Wireless Mouse with High-Precision Optical Sensor 1250 DPI Achieves ideal accuracy, pin-point tracking, speed Up to 2Mbps data transmission over the 2.4Ghz UHF band Stylish and eco-modern look, with new UV coating for durability Air Finder was designed to allow you to get the job done for less! Runs on a single AA battery, has all pro features (scroll wheel, etc.)