Ride smarter and more aware with Garmin Varia RTL510 rear-view radar.  Mounted neatly on the seat post, it provides visible and audible alerts for vehicles approaching from behind up to 140 meters away.  Plus, the bright tail light is visible in daylight from up to 1.6 km away, so you can ride with confidence and peace of mind.
This Sensor has your Back
While out on a ride, you have to keep track of everything.  What's your route, how far you're going, how fast and how hard you're going to push it.  But with Varia radar along for the ride, it's like having eyes in the back of your helmet.  It's essentially an early warning system so you see cars approaching from behind and they see you.Safety in Numbers
Varia RTL510 rear-view radar is just one part of cycling awareness.  When paired with compatible Garmin devices the system helps to create safer riding conditions by alerting riders to vehicles approaching from behind.  Green light? All good. Amber light? A vehicle is approaching. Red light? Take care — a vehicle is approaching at high speed. Ride safe.