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Garmin Varia Cycling Rearview Radars: RTL510 vs. RTL515

Garmin recently released RTL515 Varia Cycling Rearview Radar. So, how does the new version compare against the older RTL510?

You can find out in this comparison guide.

Quick Summary

The main difference between the Garmin Varia RTL510 Cycling Rearview Radar and Garmin Varia RTL515 Cycling Rearview Radar is that the RTL515 supports smartphones. In addition to being used as a display, your phone can also show other helpful data and provide alerts.

The tail light of the RTL515 also comes with the extra peloton mode, which provides lower light flashes that makes it easier on the eyes of other cyclists.

If you are interested, you can purchase either of the two products on Amazon with the following links:

RTL510 vs. RTL515 Comparison Chart

You can find a comparison table between the two cycling rear view radars below.

 Garmin Varia RTL510 Cycling Rearview RadarGarmin Varia RTL515 Cycling Rearview Radar
What's in the Box (Standalone)Varia RTL510

Mounting Kit

Cables

Documentation
Varia RTL510

Radar Display Unit

Mounting Kit

Cables

Documentation
What's in the Box (Bundle)Varia RTL515

Mounting Kit

Cables

Documentation
RVR315

Mounting Kit

Power Cable

Documentation
Dimensions3.9” x 0.8” x 1.6" (or 98.6 mm x 19.7 mm x 39.6 mm)3.9” x 0.8” x 1.6" (or 98.6 mm x 19.7 mm x 39.6 mm)
Weight2.5 oz (or 71.0 g)2.5 oz (or 71.0 g)
Radar Coverage AreaUp to 153 yards (or 140 meters)Up to 153 yards (or 140 meters)
Viewing Angle220°220°
ModesSolid

Night Flash

Day Flash
Solid

Night Flash

Day Flash

Peloton
Lumens20 lumens in solid mode

29 lumens in night flash mode

65 lumens day flash mode
20 lumens in solid mode

29 lumens in night flash mode

65 lumens day flash mode

8 lumens in peloton mode
Battery Life6 hours in solid mode

6 hours in night flash mode

15 hours in day flash mode
6 hours in solid mode

6 hours in night flash mode

16 hours in day flash mode

8 hours in peloton mode
WaterproofIPX7IPX7
BLE Support?NoYes
Smartphone AppsN/AVaria App

Ride with GPS

Garmin Connect

And More
ANT+ Support?YesYes
Compatible DevicesD2 Delta

D2 Delta PX

D2 Delta S

Edge 1000

Edge 1030

Edge 130

Edge 25

Edge 520

Edge 520 Plus

Edge 530

Edge 530 Mountain Bike Bundle

Edge 810

Edge 820

Edge 830

Edge 830 Mountain Bike Bundle

Edge Explore

Edge Explore 1000

Edge Explore 820

fēnix 5

fēnix 5 Plus

fēnix 5S

fēnix 5X

fēnix 5X Plus

fēnix Chronos

Forerunner 735XT

Forerunner 935

Forerunner 945

tactix Charlie

Varia Vision In-Sight Display

vívoactive 3

vívoactive HR
D2 Delta

D2 Delta PX

D2 Delta S

Edge 1000

Edge 1030

Edge 130

Edge 25

Edge 520

Edge 520 Plus

Edge 530

Edge 810

Edge 820

Edge 830

Edge Explore

Edge Explore 1000

Edge Explore 820

fēnix 5

fēnix 5 Plus

fēnix 5S

fēnix 5X

fēnix 5X Plus

fēnix Chronos

Forerunner 735XT

Forerunner 935

Forerunner 945

tactix Charlie

Varia Vision In-Sight Display

vívoactive 3

vívoactive HR
PricingCheck price on Amazon.Check price on Amazon.

What’s in the Box

The contents included in the packages depend on what configuration you are getting.

You can check out the lists below:

Varia RTL510 Rearview Radar (010-01980-00):

  • Varia RTL510
  • Mounting Kit
  • Cables
  • Documentation

Varia RTL510 Radar Tail Light Bundle (010-01981-00):

  • Varia RTL510
  • Radar Display Unit
  • Mounting Kit
  • Cables
  • Documentation

Varia RVR315 Rearview Radar (010-02252-00):

  • Varia RTL515
  • Mounting Kit
  • Cables
  • Documentation

Varia RVR315 Radar Tail Light Bundle (010-02376-00):

  • RVR315
  • Mounting Kit
  • Power Cable
  • Documentation

Dimensions

The Garmin Varia RTL510 and Garmin Varia RTL515 have the same dimensions.

You can take a look at the exact measurements below:

  • 3.9” x 0.8” x 1.6″ (or 98.6 mm x 19.7 mm x 39.6 mm)

Weight

The two cycling rearview radars also weigh the same at 2.5 oz (or 71.0 g).

Radar Coverage Area

The coverage area of the radars is the same. The two devices are able to detect vehicles at up to 153 yards (or 140 meters) from the back of your bike.

Viewing Angle

Both Varia RTL510 and Varia RTL515 have the same viewing angle at 220°.

Modes

The Varia RTL510 comes in three modes: solid, night flash and day flash.

The Varia RTL515 features four modes: the aforementioned solid, night flash and day flash in addition to peloton.

For the uninformed, the peloton mode will provide a low intensity flash that will be easier on the eyes of other cyclists.

Lumens

Lumens measure the brightness level from the tail light.

In this case, the brightness are the same in the products with 20 lumens in solid mode, 29 lumens in night flash mode and 65 lumens in day flash mode.

The tail light will also produce 8 lumens in RTL515’s exclusive peloton mode.

Battery Life

The battery life is the same in solid and night flash modes.

The new Varia RTL515 will last a little longer than the Varia RTL510 in day flash mode.

Finally, the peloton mode of Varia RTL515 has a battery life of 8 hours.

You can find the full battery specs below:

Garmin Varia RTL510 Cycling Rearview Radar:

  • 6 hours in solid mode
  • 6 hours in night flash mode
  • 15 hours in day flash mode

Garmin Varia RTL515 Cycling Rearview Radar:

  • 6 hours in solid mode
  • 6 hours in night flash mode
  • 16 hours in day flash mode
  • 8 hours in peloton mode

Waterproof

Both products have a waterproof rating of IPX7. As a result, the two radars can withstand being submerged in water at up to 1 meter for the maximum of 30 minutes.

BLE

The Varia RTL515 supports Bluetooth Low Energy (or BLE), a feature that lets you connect the radar to a compatible device, such as a smartphone, while using very little power consumption.

Smartphone Apps

Only the Garmin Varia RTL515 Cycling Rearview Radar is compatible with the Varia App. The smartphone application can be used as the primary or backup display. It provides graphics in addition to sound and vibration alerts of incoming vehicles.

The radar is also compatible with other apps such as Ride with GPS and Garmin Connect.

ANT+

Both Garmin Varia Bicycle Rearview Radars support ANT+. The technology will connect the radars to compatible devices.

Compatible Devices

You can find the list of compatible devices for the Varia RTL510 and Varia RTL515 below:

Garmin Varia RTL510 Cycling Rearview Radar:

  • D2 Delta
  • D2 Delta PX
  • D2 Delta S
  • Edge 1000
  • Edge 1030
  • Edge 130
  • Edge 25
  • Edge 520
  • Edge 520 Plus
  • Edge 530
  • Edge 530 Mountain Bike Bundle
  • Edge 810
  • Edge 820
  • Edge 830
  • Edge 830 Mountain Bike Bundle
  • Edge Explore
  • Edge Explore 1000
  • Edge Explore 820
  • fēnix 5
  • fēnix 5 Plus
  • fēnix 5S
  • fēnix 5X
  • fēnix 5X Plus
  • fēnix Chronos
  • Forerunner 735XT
  • Forerunner 935
  • Forerunner 945
  • tactix Charlie
  • Varia Vision In-Sight Display
  • vívoactive 3
  • vívoactive HR

Garmin Varia RTL515 Cycling Rearview Radar:

  • D2 Delta
  • D2 Delta PX
  • D2 Delta S
  • Edge 1000
  • Edge 1030
  • Edge 130
  • Edge 25
  • Edge 520
  • Edge 520 Plus
  • Edge 530
  • Edge 810
  • Edge 820
  • Edge 830
  • Edge Explore
  • Edge Explore 1000
  • Edge Explore 820
  • fēnix 5
  • fēnix 5 Plus
  • fēnix 5S
  • fēnix 5X
  • fēnix 5X Plus
  • fēnix Chronos
  • Forerunner 735XT
  • Forerunner 935
  • Forerunner 945
  • tactix Charlie
  • Varia Vision In-Sight Display
  • vívoactive 3
  • vívoactive HR

Resources: