Garmin Varia RTL515 vs RVR315

Garmin Varia RTL515 combines rearview radar and a tail light. RVR315 provides rearview radar without a light, for riders who want a separate rear-light setup.

Feature Varia RTL515 Varia RVR315
Rear radar Approaching vehicles up to 140 m away Approaching vehicles up to 140 m away
Tail light Integrated, with multiple modes Not included
Battery claim Up to 16 hours in day-flash mode; up to 6 hours solid Up to 7 hours
Product Garmin Varia RTL515 Garmin Varia RVR315

Choose the light setup first

RTL515 makes sense if you want the radar and rear light in one seatpost-mounted device. RVR315 makes sense if you already have a light or prefer to place the light and radar separately. Check mounting space, seatpost shape and clearance to bags or other equipment before choosing.

Choose a compatible display

Radar alerts appear on a compatible receiving device or app. Both models support compatible Edge head units and the Varia phone app; other apps and devices need their own radar support. Confirm your exact receiver, rather than assuming every Bluetooth device can display approaching traffic.

Understand the limit

Radar supplements awareness of vehicles approaching from behind. It is not a substitute for looking, listening and checking traffic before a maneuver. Detection and alerts can be affected by conditions and configuration. Compare battery figures using the stated light modes and charge before a long ride.

Source: Garmin’s RTL515 and RVR315 announcement. Shop lights and rearview radar.