Garmin Varia RTL515 Rearview Radar with Taillight - Trek Bikes
Garmin Varia RTL515 Rearview Radar Taillight 753759254124 | eBay
I tried using Garmin's rear view radar for bicycles 'Varia R TL515' that can detect the approach of a car with a millimeter wave radar and can also be a tail light -
Meet the new Garmin Varia™ RVR315 and RTL515 rearview radars for cyclists | Spark Bike