3M EM550GPS Ergonomic Wireless Optical Mouse - Small Black 3-Button Comfort Mouse for Office & Home Use - Reduces Wrist Strain for Long Computer Sessions

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.