Originally Posted by Psydotek

+1

I have the Protoge on my commuter (Cateye Astrale 8 on my other two bikes). I use it mainly to keep track of my annual mileage though all the other functions are great to have (at least for me). The thermometer is useless in direct sun mostly because it reads anywhere from 5-10 degrees higher than the actual air tempertaure, but it's accurate in the morning/cloudy days. I find it most useful on cold days to gauge how many layers of clothing i need to wear (well, not for that moment but for future reference. did i feel too hot/cold with this many layers at this temperature?)