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Bryton Gardia R300L rear bike light and radar

6 modes, brake light, radar

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MPN : BRYTON.GARDIA.R300 | EAN : 4718251593207 | Ref : 18741880001

€89.99 €121.99

Price : €129.95

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Based on 110 reviews

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Bryton Gardia R300L rear bike light and radar

More details In stock

Bryton Gardia R300L rear bike light and radar

€89.99 €121.99

Our advice

The Bryton Gardia R300 is the must-have accessory for riding safely on the road among cars. It allows you to spot approaching vehicles while making yourself visible to other road users via a powerful light and brake light.

Antoine B.

Technology specialist

To cycle safely amongst other road users, cyclists must be as visible as possible with a rear light, such as this Gardia R300L Bryton, which will meet your expectations and more. When paired with a compatible GPS device or a smartphone with the Gardia Bryton app, this radar displays the distance to approaching cars within a range of 150 metres. This speed camera detector will become your best ally in warning you of potential danger, as visual and audible signals will alert you to the approach of a vehicle.

This Gardia R300L Bryton will also ensure you’re clearly visible to other road users thanks to its rear light system. This is designed to catch the attention of motorists from up to 1.6 km away in broad daylight. There are several lighting modes, with adjustable brightness ranging from 0 to 73 lumens, ensuring you’re always visible whatever the conditions. The light automatically adjusts to the ambient light conditions via a sensor to ensure the brightness is as appropriate as possible. This Gardia R300L Bryton also features a brake light that uses a G-sensor. It alerts vehicles approaching from behind to any emergency braking, thereby reducing the risk of a collision.

This Gardia R300L Bryton is compatible with all devices that can connect via ANT+ or Bluetooth, such as Garmin cycle computers. The USB-C rechargeable battery is convenient and offers a good battery life ranging from 24 to 8 hours, depending on usage mode. The remaining battery life is clearly displayed on your device’s screen to prevent your radar from running out of power whilst you’re out cycling. This product is easy to install using an elastic strap that fits all seatposts. In short, this Gardia R300L Bryton is sure to suit all cyclists looking for safety.

Technical specifications:

- Dimensions: 40.0 mm wide, 97.0 mm high, 20.9 mm deep
- Weight: 66 grams
- Lighting modes: High Intensity (8 hours, 20 lumens), Low Intensity (12 hours, 5 lumens), Daytime Flash (17 hours, 73 lumens), Night-time Flash (17 hours, 12 lumens), Group Mode (11 hours, 12 lumens), Light Off (24 hours)
- Water resistance: IPX7
- Field of view: 220°
- LED indicator: ANT+, Bluetooth
- Brake light
- Visual and audible signals to alert vehicles
- USB-C charging
- Brand: Bryton

Colours	black
Power	long range
Position	rear light
EAN	4718251593207
Supplier reference	BRYTON.GARDIA.R300

Average rating: 4.8 out of 5

Based on 110 reviews

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Rated 5 out of 5 Camille L.

Published Oct 27, 2026 at 01:13 pm Order date: Oct 03, 2026 (Translated review)

Product as described, good value for money, fast shipping, no problems
Rated 5 out of 5 Philippe B.

Published Oct 17, 2026 at 08:47 am Order date: Oct 05, 2026 (Translated review)

Useful for being forewarned.
Rated 5 out of 5 Renaud B.

Published Oct 15, 2026 at 07:30 pm Order date: Oct 04, 2026 (Translated review)

My Garmin Varia was a little old and the battery didn’t last as long. The current promotion on Velo equipment made me try this new radar. I’m very happy with it, and it works very well.
Rated 5 out of 5 Dominique J.

Published Oct 10, 2026 at 08:34 am Order date: Sep 28, 2026 (Translated review)

Effective
Rated 5 out of 5 REMI S.

Published Sep 19, 2026 at 06:01 pm Order date: Sep 09, 2026 (Translated review)

Top
Rated 5 out of 5 Thierry C.

Published Sep 05, 2026 at 08:25 am Order date: Aug 24, 2026 (Translated review)

It is great
Rated 5 out of 5 Jean philippe c.

Published Aug 21, 2026 at 05:52 pm Order date: Aug 10, 2026 (Translated review)

The radar works well.
Rated 5 out of 5 JEAN-MARIE C.

Published Aug 19, 2026 at 10:42 am Order date: Aug 06, 2026 (Translated review)

Good product, very satisfied.
Rated 4 out of 5 Jean Claude B.

Published Aug 09, 2026 at 07:34 pm Order date: Jul 29, 2026 (Translated review)

For now, after a few days of use, everything is fine
Rated 5 out of 5 ERIC S.

Published Aug 06, 2026 at 07:00 pm Order date: Jul 25, 2026 (Translated review)

Easy to use and quick to install. Very useful in use

Up to 190 metres according to Bryton. In real-world conditions (straight road, not too much traffic from the side), most users report reliable detection of approaching vehicles from 150 metres and beyond. Supports multiple vehicles (up to several simultaneously), with automatic assessment of the threat level (relative speed) and directional display on a compatible cycle computer screen.

This Gardia R300L Bryton offers 6 lighting modes. In daytime flash mode (73 lumens), it offers a battery life of up to 17 hours. Night-time flash mode (12 lumens): 17 hours. Peloton/group ride mode (12 lumens): 11 hours. High intensity (20 lumens): 8 hours. Low intensity (5 lumens): 12 hours. Radar only: up to 24 hours.

In mixed use (daytime flashing + radar), expect a battery life of approximately 11–14 hours. Full USB-C recharge in 3–5 hours. Automatic brightness reduction when the battery is low. Sleep mode after 5 minutes of inactivity (with light mode saved).

Yes. Thanks to the high-brightness CREE LED, the daytime flashing mode is visible from up to 1.6 kilometres away. Automatic braking (G-sensor): switches to an intense red braking mode during deceleration or emergency braking.

ANT+: radar + light profile (controls light modes on certain models).

It is compatible with almost all modern cycle computers: Bryton (Rider series, S-series), Garmin Edge (830, 1040, etc.), Wahoo ELEMNT (Bolt/Roam) and Hammerhead Karoo.

Bluetooth 5.0: smartphone (dedicated Bryton Gardia app – visual/audible/vibration alerts without a cycle computer).

Yes. The built-in accelerometer detects deceleration, indicated by a flash or increased brightness. Reliable for normal and emergency braking. Improved via recent firmware updates (fewer false positives).

All-in-one system: Aero-Mount (standard).

D-shape-Mount (round seatpost).

Central quarter-turn (sturdy, but not compatible with native Garmin ).

Yes. It is rated for water resistance up to 1 m for 30 minutes (IPX7 standard). It can withstand heavy rain, but prolonged immersion or high-pressure washing should be avoided.

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