With exclusive Darkfield Laser Tracking™ you can use your mouse virtually anywhere—even on glass. Hyper-fast scrolling lets you fly through long documents and web pages with a single spin of the nearly frictionless scroll wheel. Tiny Logitech® Unifying receiver stays plugged into your computer's USB port and connects up to six compatible devices. 2.4 GHz wireless technology provides reliability and freedom without delays or dropouts. Mouse's sculpted design comfortably fits your hand. Connector/Port/Interface: USB; Left/Right Hand Use: Left/Right; Mouse Technology: Laser.