Bike computers can be tougher than you think... at least in my experience. I have damaged plenty of components in crashes... mostly in mountain bike crashes but have yet to trash a computer. I once had a Cateye CC-8000 "ATC" (gave it away when I handed the bike down to my brother) and was out riding one night on a mild trail. I got caught up with looking at the stars and didn't notice the big bar/road-block at the end of the trail until too late. I slammed on my brakes and slowed down a tad but the bar was right at the correct height to smack my handlebars. I endo'ed over the roadblock, my bike was wedged against the bar and still standing upright. The bar had also kissed the tops of my hands and they were hurting. For the first few minutes, I thought maybe I had broken some bones. My cheap CateEye HL-500 light was smashed and my computer... nowhere to be seen. It had been ejected off its mount by the impact. I spent quite a bit of time search around for it and eventually found it. There was a slight scratch at the front of unit where it impacted the bar but it was no worse for wear and functioned fine. Sadly, the ATC is no longer made and admittedly it was quite an expensive computer (and at US$85 would still be even today). Actually, one of the reasons I suggested the Cateye Enduro 2 is because it's constructed along the same design principles as my old ATC yet is fairly inexpensive... although it doesn't have all the nifty features of the ATC.