Bryton Gardia R300L Bike Radar Review // Now MUCH Better with Updated Firmware
Shane Miller - GPLama
July 11, 2023
The Bryton Gardia ANT+ Radar/Tail Light had a troubled beginning, as it was released with an initial firmware that fell short of expectations as a cycling 'safety' device. However, after undergoing months of rigorous testing and retesting, Bryton seems to have resolved the majority of the issues plaguing their ANT+ Radar. In this video, I delve into the product's history, discuss the early challenges I encountered, and conduct comprehensive real-world tests, pitting it against the Garmin Varia RTL515 to assess its performance.
Links:
Bryton GARDIA R300L (Amazon US): https://amzn.to/3OiEXIB
My Bike Radar Traffic ConnectIQ Field: https://bit.ly/3dH8ifL
My Bike Traffic Website: https://bit.ly/3Ad9tLA
KOM Cycling Radar Mount: https://amzn.to/3c970cY (can be rotated to fit!)
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Video Index:
0:00 Intro
0:29 Bryton Gardia - Release History
1:21 Early Testing - Not Good
1:53 New Firmware - MUCH Better!
2:08 Coming Up....
2:31 Unboxing / Hands On
6:28 Things to Know
7:46 Light Brightness Test
8:11 Road Test 1
9:48 Road Test 2
11:40 Road Test 3 - Long Range
12:31 Road Test 4
13:13 Road Test 5 - Caravan Test
14:44 Road Test 6
17:09 Road Test 7 - Lake Wendouree
19:20 Road Testing Summary
20:30 Summary
21:11 Wrap-Up
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#Cycling #Gardia #Bryton
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Parts Mentioned
Bryton Gardia R300LBryton Gardia R300L
Created: April 29, 2026The reviewer discusses the Bryton Gardia R300L rear tail light radar device, noting that it has a detection range of up to 190 meters, but in practice rarely exceeded 160-170 meters. After initial firmware issues, version 0.4.1.3 improved performance to an acceptable level. The unit generally detects vehicles reliably but has some lag in clearing alerts and occasionally double-counts large vehicles. It is compatible with ANT+ radar and light standards, works with Garmin, Wahoo, and Hammerhead head units, and has a battery life of about 9 hours 48 minutes in full solid mode. The reviewer concludes it is a viable alternative to the Garmin Varia, though not as polished.
AI-Summary
Pros
- After firmware update, performance is acceptable and reliable for detecting vehicles
- Compatible with ANT+ radar and light standards, works with Garmin, Wahoo, Hammerhead
- Battery life exceeds claimed 8 hours, tested at 9 hours 48 minutes in full solid mode
- Brightness is on par with Garmin Varia
- Lighter than Garmin Varia (69g vs 71g)
- Can use same mounts as Magene L508
- Auto sleep mode after 5 minutes of inactivity
- Brake light function optional
Cons
- Initial firmware at release had multiple false positives and laggy clearance events
- Detection range rarely exceeded 160-170 meters despite claimed 190 meters
- All clear events can still be laggy at times
- Multiple detections not as good as Garmin Varia
- Tends to double-count large vehicles like trucks and caravans
- Detections beyond 150 meters do not move the dot on screen until closer
- One instance where unit cleared a car that was still approaching at same speed, then re-detected late
- Button on top may be prone to getting clogged with debris
Where to Buy
Bryton Gardia R300L