Logitech made it's first wireless RF mice in 1991 costing $150 while today you can get one for $25. It took them 19 years to reach the '100 million wireless mice sold' milestone, nearly 2 years after reaching the '1 billion mice sold' milestone in Dec, 2008. The latest wireless mice from Logitech ha ... -:- continue reading this post on WythTech.! - wythtech