Keep your wrist still and straight in a neutral forearm position while mousing!
Neutral wrist, neutral hand, no wrist or elbow injuries! The top button has a right and left button activated with your thumb.
Compatible with Windows 2000 (ME). This mouse is a univerisal mouse and user friendly to PS/2, USB or MAC.
Small/medium is the width of the large knuckles 3.5 inches or less. Large is a 3.5 inches or greater measurement.
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