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Rear radar light from GarminThe smart Varia RearVue 820

Julian Schultz

 · 09.02.2026

With the Varia RearVue, tech specialist Garmin presents a new radar rear light.
Photo: Garmin
The new Garmin Varia RearVue 820 StVZO is a smart rear light with integrated radar technology. This is designed to recognise approaching road users at an early stage and warn drivers. The system should also be able to detect overtaking manoeuvres and measure the overtaking distance.

The new "rear view" light follows on from the Varia RTL 515/516 and has exciting new functions. In particular, the ability to visualise the overtaking distance of approaching vehicles should increase the feeling of safety for many cyclists.

The radar also wants to be able to distinguish between different vehicle sizes. Compared to the old model, the range of the radar has also been increased: instead of 140 metres, other road users are now detected from up to 175 metres.

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The information can be displayed on compatible Edge computers, smartwatches or smartphones. According to Garmin, the following devices are required to visualise the overtaking distance and vehicle size: Edge 540/Solar, Edge 550, Edge 840/Solar, Edge 850, Edge 1040/Solar and Edge 1050.

The new radar rear light from Garmin can be attached either to the seat post or to the seat stays using an optional bracket.Photo: GarminThe new radar rear light from Garmin can be attached either to the seat post or to the seat stays using an optional bracket.

The rear light is StVZO-compliant and should be visible up to a distance of 350 metres. The battery life is specified as a maximum of 16 hours in continuous light mode; when the rear light is switched off, the Varia RearVue 820 should last up to 30 hours.

The new radar rear light is now available at a price of 299.90 euros. Compared to the old model (Varia RTL 515/516), this means a surcharge of 100 euros. The top model with integrated camera (Varia RCT716) is even more expensive at 399.90 euros.

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Garmin Varia RearVue 820 StVZO: Technical data

  • Weight: 90 grammes
  • StVZO approval: Yes
  • Lumen: 5
  • Visibility: 350 metres
  • Max. Vehicle detection: 175 metres
  • Watertightness: IPX7
  • Battery life: 16 hours (continuous light), 30 hours (radar)
  • Transmission: ANT+, Bluetooth
  • Scope of delivery: Mounting kit, charging cable
  • Price (RRP): 299.90 euros; with integrated camera 399.90 euros
Julian Schultz

Julian Schultz is a qualified sports scientist and trained sports journalist and is responsible for testing complete bikes. From competition bikes to gravel bikes, he tests the latest models and keeps his eyes open for the latest trends. This includes the Tour de France, where the test editor has been on the lookout for technical details and stories from the paddock since 2022.

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