The Sports Instruments SI 90 Series of cycle computers is a result of intelligent engineering, intuitive functionality and ergonomic design. Created for the weekend enthusiast as well as the professional cyclist, the SI 90 series delivers the goods in a large easy-to-read format. With its simple-to-navigate interface, you can access the information you need without being distracted from the ride. The SI 90 Series is not another generation of cycle computers, but truly, the new standard. Take any of the three for a ride, and you’ll see for yourself.