All of the laser/optical mice have a pickup element (camera) and a light.
The darker mice, when in contact with the surface, do not "glow", but I
imagine they could be seen as "glowing" if you had them on a light colored
surface. They do occasionally flash red, as the light strength is increased
when the mouse is in use.
--
Gregory A. Beamer
MVP; MCP: +I, SE, SD, DBA
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Think outside of the box!
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