Amazon has the Garmin Varia RCT715 Bicycle Radar w/ 1080p Camera and Tail Light for a low $299.99 Free Shipping. This is normally $399.99, so you save $100 off.
Like other bike radars, the CarBack can be used with either a cycling computer or your smartphone. Mounted either on a seat ...
In the app, you can change tail light modes and video quality ... If you don't need an action cam, you can give the Garmin Varia RTL515 a try. This aft radar system adds value to any bike ride ...