Garmin

love the options, but not the battery life. Many times this thing dies on me after just 1 hour and 15 minutes. It override the low light switch all the time witch drains the battery even faster. for this much money I demand better. I use a garmin head unit and radar tail light so this seemed like a no brainer, but I am going back to my cyclic head light. It's half the price and does everything this garmin does for twice as long. sorry garmin, you missed the mark on this one.

I was reluctant to jump into one of these, convincing myself that I was sufficiently safe with the flashing rear light I had. But I kept reading accounts of how much safer folks felt with one of these, so decided to "upgrade" in the name of safety.

This also meant getting a suitable bike computer...and I added these to a new-to-me bike.

I'm flabbergasted by how much of a change this combination represents.

I LOVE the audio warning and the visual indication of when I have a vehicle coming up on me. I ride on rural roads in the southwest corner of VT and nearby roads in NY and MA. I've appreciated each warning and been super-happy with my purchase.

Maybe the newer generation is an upgrade, but at the price BTD was selling these and coming from where I was, I'm THRILLED with my purchase.

Finally picked up a radar taillight with the outgoing Varia RTL515 on discount and I have to say, I've appreciated the radar/light more than I thought I would. I haven't used it in the dark yet, so I cannot speak to the effectiveness of the tail light, but the radar function has made me wonder how I survived so long without one. I assume no bike radar is 100% perfect when it comes to picking up cars, but in several weeks of usage, this model has been probably 99% accurate. Get yourself one before they're all gone!

Interfaces with radar/light unit, easy on/off mounting (came with numerous mounting options). Good battery life. Like the feature ability to track fellow riders over busy courses (e.g RAGBRAI type events).