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).
I was updating my old Garmin Edge 530 which served me faithfully for 6 years or so. I don't replace gear that often so this was a big change for me. My first impressions after 200 miles or so indoors and out. The unboxing process was seamless; I unboxed it and synched it using house wi-fi. Everything from my old unit worked seamlessly and the process was fast. Initially I noticed my phone would interfere with the Wahoo Kickr core signal. Solution was to connect phone last. Same thing happened using a Garmin Varia. I just needed to connect ap on phone after getting 840 set up. Otherwise system is a great upgrade. I actually was on the fence about touchscreen but after using it for a couple months I've gotten used to it and love it. Overall great experience and I'm happy I didn't spring for the extra solar charging unit.
The arm band is incredibly comfortable and most of the time I forget I'm wearing it. I love the fact that its rechargeable so no batteries to change. You can get several different color armbands which are interchangable if you want a bright color. I never have a problem connecting to any device or trainer.
