Got my new toy yesterday the Garmin Varia bike radar.
I purchased the rear light and radar only for $199. It integrates with my Edge1000. It is very accurate; it notifies you to cars approaching from behind even when you can’t see them in your mirror. Though it is not a substitute for a mirror, it is one more added tool to keep us riders safe.
I rate it an A+ Works great and is a must for any cyclist and would be great for sweeps to have.