3M EM550GPS Ergonomic Wireless Optical Mouse - Small, Black, 3-Button Design for Comfort & Precision | Perfect for Office, Home & Travel Use

Alleviate repetitive stress and discomfort on the hand, wrist and arm with this ergonomic, vertical grip optical mouse. Oversized, contoured base keeps your hand and wrist at a neutral angle while providing added comfort and control. Programmable third button enables scrolling through documents with thumb. USB wireless receiver eliminates the hassle of cables.