EXTREMELY VISIBLE. INCREDIBLY POWERFUL.
Varia RearVue 820 features our most powerful and precise radar, but with a wider field of view, for more reliable alerts than ever before. The taillight offers up to 2 km of visibility and also alerts when you stop or brake.

Smart and reliable radar
Thanks to the most powerful and precise radar detection technology, Varia RearVue 820 detects approaching vehicles up to 175 meters away with a wider field of view.

Bright taillight and brake light
The taillight allows you to be visible up to 2 km away. A brake light detects when you slow down or stop and displays a unique flashing sequence.

Advanced vehicle detection
View alerts for small, medium, and large vehicles and see when a vehicle changes lanes, along with its threat level, when paired with a newer version of Edge® or the Varia™ app on your smartphone.

Receive alerts your way
For visual and audible alerts while riding, pair this radar with the Varia app, compatible Edge devices, or Garmin smartwatches. In addition to wrist alerts, select Garmin smartwatches can also provide audio alerts for approaching vehicles; this feature is currently available in the Garmin Public Beta for some smartwatches³.

Various brightness options
Ride with four different brightness levels: daytime flash, nighttime flash, solid mode, and peloton mode, which helps preserve the eyes of riders behind you. You can also customize your preferred mode via the Varia app.

Compact design
The compact design and new Varia RearVue 820 seat post mount fit perfectly on almost any road or gravel bike and is compatible with the Varia seat post mounting kit (sold separately).

Features

• Detects vehicles up to 175 meters away with a wider field of view
• Get up to 24 hours of battery life in daytime flash mode
• Taillight is visible up to 2 km
• Displays the size of approaching vehicles
• Brake light alerts others that you are slowing down or stopping
• Pay attention to vehicles traveling at the same speed as you

Technical Specifications

• Dimensions: 98.9 x 25.9 x 43.2 mm (3.9" x 1" x 1.7")
• Manufacturer weight: 90 g (3.2 oz)
• Light modes: Solid, peloton, night flash, day flash
• Custom light mode configuration: Yes (with Varia Mobile app)
• Radar-only mode
• Lumens: 25 solid, 8 peloton, 40 night flash, 100 day flash
• Water resistance rating: IPX7
• Battery life: 10 hours solid; 15 hours peloton; 10 hours night flash; 24 hours day flash; 30 hours radar-only
• ANT+®: Yes (radar, bike lights)
• BLE: Yes (radar, bike lights)
• Viewing angle: 220°
• Visibility distance: 2 km
• Taillights
• Brake light
• Rear radar
• Side vehicle positioning
• Vehicle size classification
• Vehicle threat level: Identifies vehicle footprint, speed, and lateral distance
• Maximum vehicle detection range: 175 m
• Radar beam width: 60°
• Varia™ app compatibility

In the box

• Varia™ RearVue 820 radar taillight
• Mounting kit
• Charging cable
• Documentation