Garmin 010-02376-00 Varia RTL515, Cycling Rearview Radar with Tail Light, Visual and Audible Alerts for Vehicles Up to 153 Yards Away

It's the single best bike accessory you can buy. Works like a charm on roads. Picks up cars everytime. I usually ride about two hours at a time and recharge every third ride. I feel safer riding on roads with this unit. STRONGLY RECOMMEND!! I suggest purchasing a Garmin compatible mount for mounting under your seat. The under seat mount allows you to keep a spare flashing light on the seat post.

After several uses, I kept asking myself... Why didn't I get this radar much earlier? Cynics saying a mirror would do the job that the Varia does isn't completely wrong Except Varia does much more than a mirror. Firstly the Audible beeps to warn me of approaching car more than 150meters back, without taking my eyes off the road. Trying spotting a car on a small bicycle mirror that far back while keeping 100% focus on road ahead. Secondly, mirror users are partly replying on sound. The unit picks up another cyclist riding overtaking at higher relative speed to avoid collision or wheel touch. I discovered that the unit can be mounted both ways, lights at top or bottom. Doesn't appear to impact radar signal. It does send out conservative and overly cautious signal when u r on a bike path with passing cars on main part of road. Overall a great defence tool to minimize probability of being hit from the rear. Great investment.

Gostei do produto, ele funciona conforme o prometido, aumenta bastante a segurança durante as pedaladas; apenas, é um equipamento caro.

Un accesorio imprescindible para tu vida en el ciclismo. No dudes de adquirirlo. No olvides que necesitas un ciclocomputador

It is a very simple device but works well. I have it paired to a Garmin 1040 and they sync up on boot with no issues. The red LED is visible from a significant distance and has different modes (pulse, solid, etc). The radar is phenomenal and is a game changer for my road cycling. The unit beeps when a car is approaching and then beeps again as it overtakes you. This eliminates a lot of unnecessary turning around on your bike and gives you more comfort/confidence. In my experience it works 100% of the time, I have yet to see it fail even in inclement weather. Battery life is fantastic and its a very simple but effective device. The price is fair considering the cost of a potential accident and how specialized it is. Very happy with it.