Bryton Gardia R300 Biking Radar In-Depth Evaluate


Final summer season at Eurobike 2022 Bryton sorta-kinda-but-not-really introduced their new Bryton Gardia R300 biking radar. For these unfamiliar, a biking radar detects overtaking automobiles (or cyclists/mopeds/and so on…), and warns you in your bike pc/watch. On the time of announcement it represented an fascinating possibility, as each Bryton and Magene had been principally dual-announcing new radar models that had been extra budget-friendly than Garmin’s present lineup of Varia radar models.  Bryton’s R300 has an inventory worth of $129, whereas Garmin’s present technology Varia RTL-515 is $199 (albeit usually decrease, round $149).

Nonetheless, as each media outlet identified on the time it was introduced – this isn’t a class the place a product can have sure kinds of bugs. A biking radar has to have an ideal document at detecting overtaking automobiles. There’s no room for exceptions or occasional misses – or so-called ‘false negatives’.

And as you’ll see right here, the Gardia R300 exhibits promise, however finally suffers from various bugs that should be resolved earlier than it may be beneficial.

Lastly, it’s value mentioning that whilst you’re seeing an inflow of media critiques launched as we speak on account of a evaluate embargo, the fact is that Bryton has been promoting these models in Europe and Asia for months. Any shopper may have gone and purchased these models in sure international locations for a lot of months. The purpose is, this unit isn’t truly being launched as we speak. It was launched to common shoppers again in November/December in various international locations.

Talking of which, Bryton despatched over a loaner radar unit to evaluate. As ordinary, after I’m completed, it’ll return to them. That’s simply how I roll. For those who discovered this evaluate helpful, you need to use the hyperlinks on the backside, or take into account changing into a DCR Supporter which makes the positioning ad-free, whereas additionally having access to a largely weekly video sequence behind the scenes of the DCR Cave. And, in fact, it makes you superior.

Within the Field:

Right here’s a fast have a look at what’s within the field of the Bryton unit:


Inside you’ll discover the radar itself, some mount elements, mount adapters, after which a USB charging cable. Oh, and a guide:


Right here’s a more in-depth have a look at the mount choices. Basically you’ve received the half that wraps round your seat publish, and then you definately’ve received two rubber inserts which work with totally different seatpost sorts (resembling spherical ones, aero seatpost, and d-style seat posts).


Be aware that technically there are two totally different SKUs, the R300 and R300L. The one distinction is that the R300L additionally comes with a D-seat-post mount adapter, whereas the bottom R300 doesn’t. Frankly, that’s a really foolish SKU separation.

DSC_5941 DSC_5942

After which in fact that sprawling guide. No one can accuse Bryton of losing paper right here. They printed one thing on each final centimeter of this factor:


In weighing the unit on my kitchen scale, the Bryton got here in at 70g (no mounts), the Magene 64g, and the Garmin RTL-515 72g. Right here’s the way it compares size-wise to the Garmin and Magene models.


And thickness-wise, you may see they’re all principally in the identical ballpark:


With that, let’s dive into it.

Fundamental Utilization:


I’m going to largely go a bit mild on this part, primarily as a result of I believe most cyclists at this level focused on a biking radar kinda know what it’s about. As famous above, they’ve been round for practically a decade now. The final gist of it’s that the radar detects overtaking objects – be it a automotive, bike owner, bus, or perhaps a practice. It’ll then show them on a motorcycle pc or cellphone app.

The cool half right here is that that is now not a ‘Garmin solely’ recreation. Nearly each significant bike GPS pc model on the market now shows biking radar information, similar goes for watches from Garmin. Atop that, there are even third get together apps that may show biking radar information, plus in fact, apps from the radar firms themselves, together with Bryton and Garmin.

Perhaps I’ll increase this part down the highway for these new to radar, however for as we speak, let’s cowl the fundamentals of the Bryton and utilization with numerous units. First up, there’s the unit itself. It’s received a button atop it for turning it on, in addition to altering the sunshine sample – resembling regular/blinking.


In the meantime, there’s a USB-C charging port on the backside. That’s one thing missing in Garmin’s Varia RTL-515, although it’s in Garmin’s mixed digital camera variant, the RCT-715.


Like most biking issues, the Bryton R300 is waterproof spec’d at IPX7, which implies you may fall right into a canal as much as 1 meter deep for half-hour. After that, you’ll have to re-assess your life state of affairs.

Bryton has revealed the next specs when it comes to battery life and in addition the obtainable mild modes:

– Excessive solid-on (20 lumens): 8 hours
– Low solid-on (5 lumens): 12 hours
– Group trip (12 lumens): 11 hours
– Night time flash (12 lumens): 17 hours
– Day flash (73 lumens): 17 hours
– Gentle off (zero lumens, radar solely): 24 hours

It’s a bit tough to determine battery life in numerous circumstances. However for reference, on as we speak’s 1hr 45min trip, I went from 64% to 40% utilizing the Excessive Strong-On possibility. This places it roughly within the ballpark for his or her battery claims.

In terms of mounting, within the field as famous earlier you’ve received a number of totally different mount kinds, that are straightforward to snap onto your seat publish, like so:

DSC_5978 DSC_5979 DSC_5980

Notably, the sunshine is seen from the facet, as you may see above, that means that it’s not purely backwards dealing with. When it comes to visibility, Bryton claims a viewable mild distance of 1.6km. That appears affordable, because it’s vibrant AF.


Subsequent, you’ll pair it as much as your bike pc. I’ve paired it to Garmin, Hammerhead, and Wahoo models. Relying on the bike pc you could have, you may both seek for all close by ANT+ sensors, or simply biking radar sensors. The Bryton unit advertises itself correctly as an ANT+ biking radar, which is an open commonplace for biking radars. It permits them to all talk utilizing ANT+ with an outlined protocol.

As such, the next producers help the ANT+ Biking Radar profile presently:

– Bryton biking GPS models
– Garmin Edge biking GPS models and numerous Garmin watches
– Hammerhead Karoo biking GPS models
– Phases Sprint biking GPS models
– Wahoo ELEMNT biking GPS models

As well as, the Bryton unit additionally helps the bike mild profile as nicely, which implies that it may be managed utilizing the bike lighting controls on some bike computer systems. Be aware that not all bike computer systems help the ANT+ Lighting profile. For instance, Garmin and Hammerhead do, however Wahoo doesn’t.

As for the ANT+ Radar facet, right here you may see it pairing to a Wahoo ROAM V2:


As soon as paired up, relying on the bike pc model, it’ll present you a small icon within the nook indicating the radar is lively/related. That is helpful so you understand if the unit has disconnected for some purpose or in any other case run out of battery/and so on. Not all manufacturers present this.

Attending to its core performance, it’ll present you overtaking automobiles utilizing a small stripe alongside the facet of the bike pc. This strip will usually seem and the unit will chirp {that a} automotive is inside vary. Then it’ll present you a small automotive icon for overtaking automobiles. That automobile icon will transfer upwards to the highest, which implies it’s getting nearer to you. As soon as it passes you, most bike computer systems will present a quick second of inexperienced strip and chirp an “all clear” beep.

I’ve received the Karoo 2 off to the facet right here, so you may see the overtaking automobiles on the strip. Additionally, you’ll discover the sunshine on the Bryton radar adjustments and begins flashing when a automotive is inside vary – as a strategy to appeal to consideration to the driving force of your existence.

In circumstances the place a automobile is at a considerably increased velocity than you, it’ll additionally change the coloring to pink, and usually give a unique tone. Additional, the unit can detect a number of automobiles concurrently. You’ll see a number of icons on the display, like beneath:


Once more, how all this shows varies barely between firms. Heck, in Wahoo’s case you may even customise the icons to have them be chickens or Star Wars Loss of life Stars if you’d like. However the normal purpose is that every one firms show this the identical manner, within the identify of security. Some firms enable slight customization of the chimes/tones, however all firms have a selected/distinctive radar tone that’s not used some other place within the system. Once more, the concept being that your mind immediately acknowledges that’s a radar tone and never a course/exercise/and so on tone. When it comes to the Bryton radar compatibility – all of this works precisely as anticipated at a protocol/compatibility degree to third get together bike computer systems.

It must be famous someplace that Bryton says they detect automobiles as much as 190m on their web site, but the again of the field additionally says “190 avg 150m”. That looks like a bizarre manner of placing it. In my testing, sure, there are maybe occasions the place it hits 190m out (identical to Garmin Varia can too). But there are additionally loads of occasions the place it’s solely 20-30m out (not a difficulty on Varia). I get the speculation of placing the upper quantity there, however this looks like it’s Bryton attempting to place one thing on paper that’s not truly actual, within the identify of spec upmanship.


One distinctive function on the Bryton radar not on the Garmin ones, is automated brake detection illumination. In different phrases, it’ll illuminate as you slow-down/brake. This makes use of an accelerometer contained in the unit to detect you slowing down, after which illuminates the again mild for a number of seconds.

Past bike pc connectivity, Bryton has their very own app, which permits for configuring of a handful of alert/lighting settings, in addition to performing as a show within the occasion you need to use your cellphone as a substitute of a motorcycle GPS. First, right here’s the configuration choices. This additionally consists of updating firmware, all of which happens through Bluetooth Good:

IMG_9918 IMG_9919 IMG_9920

Then, there’s the utilization as a show. On this case, you’ll see the automotive approaching, in addition to choices on the backside to toggle the lights and alerts on/off. You may see the coloring, after which it goes to inexperienced for ‘All clear’:

IMG_9922 IMG_9923 IMG_9924

That is all principally an identical to what Garmin did for his or her app, which once more is sensible in terms of conforming to requirements round security. The purpose right here being to make use of this in circumstances the place you don’t have a motorcycle pc, however use your cellphone in your handlebars – resembling maybe with commuter bikes, e-bikes, cargo bikes, and so on…

Accuracy & Points:


As I stated in my intro, within the biking radar world, essentially the most important ingredient is the unit truly detecting automobiles. If a unit fails to take action, its usefulness as a radar is a legal responsibility. You now not belief it, or worse, you mistakenly suppose the coast is evident – solely to discover a automotive squishing you. In fact, ideally, you’d all the time double-check over your shoulder, however once more you want absolute belief that it all the time detects overtaking automobiles.

Within the case of Garmin’s Varia radar units, missed overtaking automobiles merely don’t exist. We’ve received practically a decade of information exhibiting that lacking automobiles doesn’t occur – a so-called false destructive. For those who have a look at the Garmin Boards, there’s actually no cases of this reported that I may discover within the final two years of posts. Nor have I heard of a single one offhand or in feedback elsewhere.

Which will get me to my Bryton R300 radar points. These are labeled in numerous piles, over various rides, in various circumstances. These are lengthy rides in quite a lot of circumstances, from wonderful however chilly solar, to fugly Dutch sideways rain, to simply overcast. Paradoxically, it carried out worst within the clear circumstances. I’ll be aware that for the overwhelming majority of my rides, the Bryton principally carried out identically to the Garmin Varia Radar – normally inside +/- 1 second.

Be aware: Please see the terminology part on the finish for some understanding of the nuances of biking radar programs.

Right here’s what I’ve had on the latest firmware:

1) Totally Missed Automobiles: Final week on a 3hr+ lengthy trip on sunny farm roads, about 1-3 occasions per hour, the unit would merely fail to detect overtaking automobiles. These weren’t slowly approaching automobiles that matched my speeds, however fairly, automobiles going about 30MPH/50KPH and on very clear highway circumstances. Nor had been these tiny automobiles, however fairly simply run-of-the-mill small SUVs, sedans, and so on… In these cases, the Varia radar working on the similar time detected the automobiles with out subject. Lastly, this was on open farm roads – the truth is, this very highway proven beneath on this very good sunny day:


On this case, I don’t have any video footage on that trip, as a result of frankly, I didn’t count on it to overlook automobiles. I then began creating concurrent footage on future rides (which is  largely a ginormous ache within the butt to display document throughout a number of bike computer systems from a number of radar models, plus a GoPro to final that lengthy, then sync all of the footage along with overlays, discover the precise moments amidst dozens of passes per hour, and so on…).

2) Latent Car Detection: Equally, on some rides I’ll see extraordinarily latent detection of automobiles. In these circumstances, Varia Radar will detect the automotive about 100+ meters out, however Bryton received’t. It received’t be until the final second, about 2-4 automotive lengths again, that Bryton realizes the automotive is there.  A similiar drawback is the place the detected automobile merely falls off monitoring if the speeds get too shut. Whereas that’s not exceptional with Varia, you may see within the video how dangerous it’s on Bryton. There’s an instance of that at 8:42 within the video (direct hyperlink to timestamp in video).

3) False detection alerts: By far the most typical subject I and others are seeing is fake positives the place the unit briefly reviews a automobile on the far finish of the vary, in circumstances the place no automobile exists. These are the least worrying as a result of they’re like transient radar blips in High Gun, and disappear with out precise security threat to me. And whereas false positives sometimes occur on Garmin units, they’re nearly all the time explainable by a glassy/reflective constructing mirroring oncoming visitors – usually in dense metropolis areas – the place normally radar is kinda ineffective anyhow on account of density. I’m not frightened about when Bryton does the identical. As an alternative, it’s the phantom alerts out on empty nation farm roads that chirp after which immediately disappear. Actually, even whereas sitting right here scripting this in an empty/quiet room with the unit on/paired off to my facet, each occasionally it briefly false detects randomly. There’s an instance of that within the video at 10:05 (direct timestamp video hyperlink).

Along with the above core main annoyances, I’ve received two extra much less critical however extra notable objects:

1) Bryton doesn’t seem to match Garmin’s high-speed harmful overtaking automobile alerting scheme. Mainly, when a automobile reaches a selected threshold, Garmin Varia models will sign to the bike pc to flag the automobile as pink, on account of excessive overtaking velocity. Nonetheless, within the case of Bryton, I’m getting a mismatch right here the place I’ll get pink alerts on the Garmin Varia facet, nevertheless it’ll solely be flagged as a generic-level automobile on the Bryton facet. My guess right here is that they’ve received both a barely totally different detection threshold, or calculation facet. You may see this at 6:18 within the video (direct timestamp video hyperlink).

2) There are distance mismatches between the Bryton app and present bike computer systems. This could be as a result of Bryton assumes their radar can see upwards of 190 meters, whereas Garmin states as much as 150 meters. So when you’ve got a motorcycle pc and the Bryton app facet by facet, they’ll visibly present you totally different distances.

3) It doesn’t fairly appear to detect as many automobiles as Varia does correctly. Whereas hidden automobiles, that’s automobiles obscured from seen view behind different automobiles, are nonetheless an issue with Varia or simply about any expertise, Bryton’s unit doesn’t fairly appear nearly as good as separating out a number of automobiles that Garmin’s Varia does separate out. Which means it’d solely present two automobiles, when Garmin can handle to point out three automobiles. Right here’s an instance of that on the road, the place the Garmin unit exhibits two automobiles, however Bryton only one automotive. Or, at 5:27 within the video in a number of places (direct timestamp video hyperlink).


Once more, I’m much less involved about these final three objects than I’m in regards to the first three core objects.

As an alternative, the whole lacking of overtaking automobiles at good velocity is my major concern. Bryton says they’re investigating it, however don’t have a solution as to why detection failed. To this point that’s solely occurred on one trip for me, albeit, my solely sunny trip. The remainder of the rides had been extra dreary.

A fast be aware on what issues are or aren’t thought-about incorrect in terms of biking radar. For these which were round biking radar for some time, these will probably be previous hat:

1) Detecting bikes/folks/motos overtaking: That is truly appropriate, the radar will normally detect/present any object that’s overtaking you. Be {that a} runner, bike owner, or moped. Heck, I may even get it to detect airplanes touchdown on a runway subsequent to a specific bike path in Amsterdam. Identical goes for a high-speed practice line that’s subsequent to a different bike path in Amsterdam. It’ll scare the crap out of you to have a high-speed practice set off the damaging alert after which two seconds later it rushes previous, nevertheless it’s doing its job: It’s exhibiting you issues which might be overtaking you. Plus, it’s kinda good to know a bike owner is developing on you – particularly trigger they’re normally silent. Right here’s an instance of that working correctly at 8:06.

2) Automobiles disappearing when sustaining very same velocity: For those who’ve received a automotive that’s behind you and sustaining the precisely similar velocity as you for an prolonged time period, it’ll probably disappear off radar. Once more, this OK/is sensible, because it’s now not ‘overtaking’. In principle, the second it begins accelerating once more and closes the hole to you, it’ll reappear. Bryton isn’t fairly nearly as good at this because the Varia although, and appears to vanish steady-state automobiles extra shortly than Garmin does – usually giving the all clear when in actuality the coast may be very a lot not clear. Right here’s an instance of that working poorly on Bryton, however higher on Garmin, at 4:15.

3) Detecting visitors on parallel roads/highways/paths/runways: Once more, that is additionally appropriate, albeit undesirable. If a freeway runs subsequent to your bike path/highway, and it’s received visitors shut sufficient, biking radar will detect it as overtaking automobiles. At 100m out, the radar merely doesn’t know {that a} highway exists or not, it simply is aware of that 100m on the market’s a automobile that’s closing the hole to you. That is in all probability the singular space the place biking radars could be a bit irritating. Right here’s an instance of that working as anticipated/designed at 8:31.

4) The unit solely exhibits 1 automotive, when in actuality there are a lot of behind it: That is regular, as a result of the radar can’t see by different automobiles. As an alternative, it’s going to point out you one icon/automotive for every automobile at totally different speeds that it could possibly see. Thus, when you’ve got a lineup of visitors behind you, you may solely see the closest automotive, however as that automotive will get nearer it’ll usually cut up into two as soon as it detects the subsequent automotive. Right here’s an instance of how the Garmin and Bryton models differ at 5:52.

Once more, a few of these are radar quirks that may take a trip or two to get used to. However when you perceive the way it works, most individuals are fairly pleased with biking radar models.



In terms of deciding to make a product, there are specific product classes the place you will get away with bugs or quirks in change for another function or operate. But for different product sorts, there’s zero tolerance for bugs or points. For instance, when an organization makes bike computer systems, you might be 98% good in your options, so long as your bugs/quirks are largely restricted to non-critical issues. Heck, you may nonetheless have annoying AF bugs, and possibly nonetheless get away with a product individuals are going to purchase.

However in terms of a security product, that tolerability for points shortly turns into zero. And that’s the problem I’ve with the Bryton R300L in its present implementation. Now 4 months after launch in Europe/Asia, the unit nonetheless has false positives many reviewers are seeing, in addition to extra uncommon false negatives. And that is some 9 months after they introduced it. Which means, they’ve probably been attempting to squash these points for fairly a while, and appear unable to.

And once more, in some product classes, you will get away with bugs or important annoyances. Take, for instance, Garmin’s personal Varia RCT-715 combo digital camera/radar unit I reviewed final Might. In that case, throughout my evaluate, I discovered the whole app portion immensely buggy and principally unusable. Besides, regardless of all the failings I identified in my evaluate (and different folks as nicely), the 2 issues it did correctly with out fail had been radar and security digital camera recording. Which means, that in the event you put aside the horrific app, then the core security options had been flawless. Whereas I didn’t advocate the product, somebody may select to make that tradeoff in the event that they needed to (and many individuals have). Nonetheless, with the Bryton R300L, that price-to-safety tradeoff is rather more difficult.

One may say you get what you pay for. And that’s true. However usually that saying is assigned to service ranges or options – not baseline security facets. It’d be like paying for a less expensive transatlantic aircraft ticket, solely to seek out out that the airline won’t truly make all of it the best way from Paris to New York Metropolis – as a substitute ending up off the coast of Lengthy Island, ditching within the water. Positive, it received 99% of the best way there, however that final 1% is kinda necessary. Identical to figuring out 100% of the overtaking automobiles is necessary, not 99%.

Look, I really need extra budget-friendly radar on the market. It retains cyclists extra conscious, and ideally saves extra lives or retains folks from getting injured. I don’t a lot care who delivers that extra inexpensive radar unit. If it’s Bryton or Magene, nice! If it’s Garmin, that’s tremendous too. And if it’s another firm – that’s superior too. However whoever it’s, must be dependable sufficient to belief with absolute certainty. I hope Bryton can type their points out, however till then, it’s a cross for me.

With that – thanks for studying!

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