This rearview radar with tail light pairs with your Edge bike computer or compatible smartphone to alert you of vehicles approaching from behind.


Maximum Awareness - Varia RTL515 rearview radar provides visual and audible alerts for vehicles approaching from behind up to 140 metres away.

Multiple Pairing Options - This radar works seamlessly with your Edge bike computer or compatible smartphone as well as select Garmin wearables or the optional radar display unit.

Works with the Varia App - This smartphone app helps you increase your awareness by providing graphics — plus tone and vibration alerts — that indicate the position and speed of approaching cars.

Third-Party App Compatible - When used with a compatible smartphone, Varia radar integrates with your favourite apps, such as Ride with GPS to overlay your maps with rearview radar alerts.

Superior Visibility - Alert motorists to your presence as soon as possible with daylight visibility up to 1 mile.

Compact Design - Easily mount this sleek, compact device on the seatpost of almost any road-use bicycle. The vertical design allows for better leg clearance and a perfectly comfortable ride.

Peloton Mode - Varia RTL515 features multiple modes, including peloton mode, which provides a low-intensity flash that is kind to other cyclists’ eyes when riding in a group.

Battery Life - Time spent charging is not as good as time spent riding. Get up to 16 hours of battery life in day flash mode and up to 6 hours in solid mode.


Dimensions 98.6 x 19.7 x 39.6 mm
Weight 71.0 g
Modes solid, peloton, night flash, day flash
Lumens 20 solid, 8 peloton, 29 night flash, 65 day flash
Battery Life 6 hours solid, 8 hours peloton, 6 hours night flash, 16 hours day flash
ANT+ Yes
Water Rating IPX7
Viewing Angle 220 degrees


D2 Delta
D2 Delta PX
D2 Delta S
Edge 1000
Edge 1030
Edge 130
Edge 520
Edge 520 Plus
Edge 520 Plus
Edge 530
Edge 810
Edge 820
Edge 830
fēnix 5
fēnix 5S
fēnix 5X
fēnix 5X Plus
fēnix Chronos
Forerunner 735XT
Forerunner 935
Forerunner 945
tactix Charlie
vívoactive 3
vívoactive HR

What's in the Box?

Varia RTL515
Mounting kit

Extra safety on the road Must Have

By: on 5 October 2020
The RTL515 warns you of approaching Vehicles before you can see them in the mirrors (I've been using "Italian Road Bike Mirrors" for the last 10 years), Great because you can't always hear the vehicles approaching, I also have a rear mounted Gopro which has recorded vehicles Deliberately targeting cyclists in the on road bike lane and Vehicles using the bike lane as an extra lane. Lights are Bright (4 settings + Radar only), I'm using my RTL515 with the Edge 530. Cost is a small price to pay for extra safety, Very Happy.

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