The Rollermouse Pro2 feels different - because it is different. Designed for todays high usage applications, the Pro2 is a proven way of avoid RSI & WRULD problems.
The basic idea behind the Rollermouse is users work with their hands within the optimal work zone which is in front of the body. This is the most relaxed position and where the fewest muscles are used and stretched. The Rollermouse station is as intuitive to use as a mouse.