Bryton GARDIA R300L Cycling/Bike Radar with Tail Light, Visual and Audible Alerts for Vehicles up to 207 Yards Away, IPX7 Waterproof, Viewing Angle 220°, Support APP Display

Delivered quickly. Priced better (less than half) than comparable Garmin unit. I like the quarter turn mount and it feels solid. It paired with my Bryton S800 head unit seamlessly and it displays a little graph that is intuitive and helpful at a quick glance. The audible beeps are also helpful and easy to decipher. It has been very accurate with detecting vehicles in daylight, dusk and night rides. Never had it 'miss' a vehicle yet but have had a few 'false positive' detections that usually resolve quickly. Gives great confidence of approaching vehicles. It shows how many vehicles and their relative distance to me and each other. Closing speed and 'all clear' indicated by differing color of graph. Doesn't seem to false detect cyclists as vehicles. It did take me a few rides to notice that vehicles that are moving at the same speed as me won't necessarily be detected or continue to be tracked if they initially are detected, those may 'clear' with a green indication and beep. They do 're-acquire' if they begin to close distance though, which all makes sense but took me getting used to. Riding with buddies that have the very similar Garmin Varia, the functionality seems nearly identical. They also get occasional false positives though not necessarily at the same moments. The light is bright and has several modes. Battery life seems to be as advertised which is very good and MUCH better than the Garmin my buddies use. It does shorten the battery life of my head unit slightly when in use, maybe 10% or so. My S800 has an almost 25-hour batt life with my particular paired devices (HR monitor, speed/cadence, power meter) so I barely notice to be fair. If I unpair the radar, I assume this would not happen but have not tried that as I'm looking for more than just a taillight obviously. 11/21/2024 update: after a firmware update the unit started constantly disconnected and reconnected from my head unit as I was riding. After a couple of days a firmware update for my head unit became available and that update resolved the issue. Not sure how that may have affected use with Garmin or Wahoo though, but something to be aware of.

I bought this mainly because I use my iPhone instead of an ant head unit. The app and radar works exactly as advertised. I wear hearing aids which connect to my iPhone via blue tooth. When an approaching car is sensed, I get a couple short beeps through my hearing aids which allows me to check my mirror. The screen on my phone has some graphics showing the approaching vehicle but I find the beeps and mirror checks most helpful. I do mostly group rides and have not noticed false positives from cyclists behind me.

What a game changer! Garmin had this market to themselves for a while, now others have jumped in which means LOWER PRICES. This radar performs wonderfully - have had no false readings whatsoever. Combine this with a mirror and your own neck-craning and you are as secure as you can be short of just staying on the couch (and most accidents occur in the home!) Criticism that it may only register the first car in a line-up behind you has some truth, but once you know someone is there you should anticipate/scan for followers. I don't think I would use one of these in an urban setting - it would be going off all the time - but on the open road (where you can be lulled into a state of inattention) it gives a great wake-up call. Took a few tries to connect to my Bryton Rider 17.

Riding with Garmin Varia or Bryton Gardia is game changer due to awareness of surroundings that it provides. One feels safer on the road as you are aware of traffic behind you. I used both with Garmin Edge 830. Similar to Varia 1. Integration with Garmin - automatically connects 2. Visual of traffic approaching is very comparable to Varia 3. Needs space underneath the post; you are mostly likely to lose space for saddle bag. Advantages of Bryton Gardia 1. Affordability: This is 60% of the cost of a Varia which is not small change 2. Mounting: The band and holder is more robust. It is easier to strech around the post 3. Aesthetics: I think the product looks quite attractive with rectangular design and light is bigger. Disadvantages of Bryton Garia 1. Car waiting behind you: When a car is behind you and it is waiting behind you, the car disappears from the radar as if there is no car behind you. It seems radar is unable to see cars if the distance is being maintained between you and the car. 2. False Alert: At times, car gets stuck in your visual in Garmin. This happens about a couple of times on a 90 min ride. Even as car has passed you and there is nothing behind you it will show that there is a car. You know it is a false alert as the car is almost bouncing on the Garmin screen - going forward and going backward 3. I have used it only for 4-5 rides and already had to charge is once. I have not experienced the 17 hr battery life that is on the description. 4. In a 90 min ride, you will see message of 'Radar has been disconnected' on the Garmin. It gets connected within 5-15 seconds...but during that time you are on your own. 5. You need to download the phone app primarily to update software. You can use it while riding as well but with Garmin bike computer, you do not need to use it. I have to test for a few more rides and have enjoyed the awareness that this brings while riding. Update Feb 4th, 2024 Bryton's latest software update seems to have corrected the first two disadvantages. No more false alerts and if a car stalls you can still see it. Fantastic product.

I never ride without it. Most of my riding is on the road so this is a necessity. I used to use cheap lights on the back and they did ok. But this guy - the radar feature shows on my computer and gives me indicators how close someone is. The light is bright and highly visible from a long way out. I've seen others and look at them and they all seem ok but, bang for the buck, seamless integration with my Garmin, super easy mounting - I'll stick with this guy.

It saddens me to write this negative review, but this is a product that is designed to increase safety and in my experience it did just the opposite. I am a bicyclist that uses my cycling time to listen to audiobooks through noise canceling earbuds and was extremely excited to see that a product like this existed. I was first brought to the awareness of bicycle radar by a YouTube channel that I followed, who used a similar product by Garmin. When checking the pricing I found this brand of radar device to be half the cost with similar features , and after watching several YouTube videos pulled the trigger and purchased this unit. I do not have an Ant2 head unit so planned to use this unit with the companion app. Upon receiving the unit, I installed the app on my iPhone and, when prompted, upgraded the firmware on the radar unit through the app. My experiences on the road were very disappointing. I was getting both false positives “indicating a vehicle when there was none. “, and even several false negatives “indicating no vehicles when there was”. This is an unacceptable and dangerous scenario. There was also many cases where the screen seemed to freeze as vehicles approached from behind and would not give the all clear until long after the vehicle had gone by. Don’t get me wrong, it is a great concept but this particular unit is just not ready for prime time. I will look more into the Garmin unit as it seems to be much less finicky.

what a difference this little radar warning system makes. It integrated to my "CycleMeter" app very, very easy. Audio and visual warning and if using visual shows multi-car line behind you when more than one.

Currently using on a commuter ebike. So far it works perfectly. Had no issues pairing to my phone or my Bryton 17 computer. I don’t have any experience with any of the competitors, but this was available at a lesser price which influenced my choice. I’m glad to say it doesn’t disappoint. For the price I’m satisfied with how it performs. So far I haven’t had any false negative readings on any of my rides. This in conjunction with a mirror I have on my handle bars makes me a lot more comfortable commuting on the roads where I live. For the price I paid $100 US dollars at the time of the review I feel like this or an equivalently is a no brainer for cycling safety. I haven’t had any issues some reviewers had, although I did update it to the latest firmware as soon as I got it out of the box. Don’t hesitate to purchase this.