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Varia RearVue 820 features our most powerful and precise bike radar yet with a wider field of view, giving you more reliable alerts than ever before. The integrated tail light offers up to 2 km (1.24 miles) of visibility and includes an intelligent brake light that activates when you're slowing or stopping, enhancing visibility to traffic behind you. The advanced radar system detects vehicles approaching from up to 140 metres away, providing real-time warnings on your compatible Garmin device or smartphone. This dual functionality—radar awareness combined with high-intensity LED lighting—creates a comprehensive safety solution for road cyclists and commuters. Weather-resistant design ensures reliable performance in varied conditions, while the compact form factor mounts cleanly to your seat tube or seat post. USB-C charging delivers extended battery life between rides, making it an essential addition to your cycling safety setup.
TRACKS VEHICLES UP TO 175 METRES AWAY WITH WIDER FIELD OF VIEW
GET UP TO 24 HOURS OF BATTERY LIFE IN DAY FLASH MODE
BRIGHT TAIL LIGHT IS VISIBLE UP TO 2 KM (1.24 MILES) AWAY
SEE THE SIZE OF APPROACHING VEHICLES¹
BRAKE LIGHT ALERTS OTHERS THAT YOU’RE SLOWING OR STOPPING
STAY ALERT TO VEHICLES TRAVELING AT THE SAME SPEED²


















