The Garmin Varia radar unit, how well does it recognize cars behind and either to the right or left of you? How about interference such as hills, signs, traffic lights etc? Any false positives, or is it pretty accurate?
I don't really want my bike to start looking like Batman's duty belt but these sound interesting. I also wear a Garmin Fenix 5x watch all the time and as my bike computer and it's compatible with the Varia.