Varia RearVue Bike Radar 820
Cycling rearview radar with tail light that gives real-time alerts of approaching vehicles.
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4.8
866 reviews
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BOLDLY VISIBLE. AMAZINGLY POWERFUL.
Varia RearVue 820 features our most powerful and accurate radar yet, offering a wide field of view and more reliable alerts than before. The tail light is visible from up to 2 km away, and the brake light signals when you brake or stop.
WIDER FIELD OF VIEW TRACKS VEHICLES UP TO 175m AWAY
BATTERY LIFE OF UP TO 24 HOURS IN DAY FLASH MODE
BRIGHT TAIL LIGHT VISIBLE FROM UP TO 2 KM AWAY
SEE THE SIZE OF APPROACHING VEHICLES¹
BRAKE LIGHT ALERTS OTHER ROAD USERS WHEN YOU BRAKE OR STOP
BE AWARE OF VEHICLES TRAVELLING AT THE SAME SPEED AS YOU²
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| POWERFUL AND RELIABLE RADAR | BRIGHT TAIL LIGHT AND BRAKE LIGHT | ADVANCED VEHICLE TRACKING |
| Featuring our most powerful and accurate radar tracking technology, Varia RearVue 820 detects approaching vehicles up to 175m away thanks to a wider field of view. | Our brightest tail light makes you visible from up to 2 km away. The brake light detects when you brake or stop and flashes in a unique pattern. | See alerts for small, medium and large vehicles, and threat-level alerts are shown when a vehicle changes lanes – when you ride with a compatible Edge® bike computer or the Varia™ app on your smartphone. |
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| GET ALERTS YOUR WAY | DIFFERENT LIGHT MODES | COMPACT DESIGN |
| For visual and audible alerts while you ride, pair this radar with the Varia smartphone app, a compatible Edge bike computer or a Garmin smartwatch. In addition to alerts you feel on your wrist, select Garmin smartwatches also give voice alerts for approaching vehicles – this feature is currently available on select smartwatches as a Garmin public beta³. | Ride with four different light modes: day flash, night flash, solid and group ride mode, which won’t distract the cyclists riding behind you. You can also create custom light modes in the Varia smartphone app. | A slim, compact design and new seat post mount let Varia RearVue 820 fit almost any road or mountain bike, and it is compatible with the Varia seat rail mount (sold separately). |
1 When riding with a compatible Edge® bike computer or the Varia™ smartphone app.
2 Same-speed tracking may be limited at slower speeds or when the radar cannot detect the road (e.g. due to snow, ice, heavy rain or other obstructions, or if the device is incorrectly mounted).
3 This feature is in beta testing for future improvements.
As engineers continuously update products, they may not always be reflected in images, videos and specifications.
General | |
| Physical dimensions | 98.9 x 25.9 x 43.2 mm (3.9” x 1” x 1.7") |
|---|---|
| Weight | 90 g (3.2 oz) |
| Light modes | Solid, group ride, night flash, day flash |
| Custom light mode configuration | Yes (with Varia mobile app) |
| Radar-only mode |  |
| Lumens | 25 in solid mode, 8 in group ride mode, 40 in night flash mode, 100 in day flash mode |
| Water rating | IPX7 |
| Battery life | up to 10 hours solid up to 15 hours in group ride up to 10 hours in night flash mode up to 24 hours in day flash mode up to 30 hours in radar-only mode |
| ANT+® | Yes (radar, bike lights) |
| BLE | Yes (radar, bike lights) |
| Viewing angle | 220° |
| Visibility distance | 2 km |
| Tail light | |
| Brake light | |
| Rearview radar | |
| Vehicle lateral positioning | |
| Vehicle size classification | |
| Vehicle threat classification | Based on speed, size and lateral distance |
| Maximum vehicle detection range | 175m |
| Radar beam width | 60° |
Connectivity | |
| Compatible with Varia™ app | |
|---|---|
Safety and legal information | |
| EU data regulation information - Miscellaneous cycling accessories | |
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- Varia™ RearVue 820 radar tail light
- Mounting kit
- Charging cable
