Smart rear-view mirrorGarmin presents new RearVue 820 radar rear light

Julian Schultz

 · 04.02.2026

With the Varia RearVue, tech specialist Garmin presents a new radar rear light.
Photo: Garmin
Garmin is expanding its range of bicycle accessories with the Varia RearVue 820 StVZO. Thanks to its integrated radar technology, the new StVZO rear light is designed to draw attention to approaching road users and measure the overtaking distance, among other things. A computer or smartwatch from the tech specialist's ecosystem is required.

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 road cyclists. The radar unit can also differentiate between 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.



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 either be attached to the seat post or to the seat stays using an optional bracket.Photo: GarminThe new radar rear light from Garmin can either be attached 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 should last up to 30 hours. The radar rear light will be available from 6 February at an RRP 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) costs 399.90 euros.

Varia RearVue 820 StVZO: The most important facts

  • 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: 299.90 euros; with integrated camera 399.90 euros

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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