The cateye stealth evo gps is a simply brilliant bit of kit it allows you to anaylse and adapt to the current conditions and your performance levels you can even upload and share ride data with your friends once you get home jammed full with features the cateye stealth evo deserves a look in from any rider displaying your current average amp maximum speed over the course of your session how far you have travelled how long you have been travelling for the current time amp ev