V220 Cordless Optical Notebook Mouse

V220 Cordless Optical Notebook Mouse High-definition optical is 2.5x more responsive than standard optical for improved tracking performance. Tilt Wheel Plus Zoom™ lets you scroll side-to-side and instantly zoom in or out. Comfortable, compact design features rubber side grips and a smaller footprint. 27Mhz mini-receiver turns power off automatically. Up to six months battery life. Mouse Technology: Optical; Connector/Port: USB; Left/Right Hand Use: Left; Buttons: 3.