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GARMIN Varia Rear View Radar RTL515 Owner's Manual - Manuals+
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 -
Garmin Varia Radar RLT510 Review - Next Gen Bike Saftey
Garmin Varia RTL515 Rear Light And Radar, Black | Bikeinn
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