Garmin Varia RearVue 820 Radar + Light

Smart Safety. Total Awareness.

The Varia RearVue 820 represents Garmin’s most advanced radar technology. It detects vehicles as far as 140 meters away and displays them as moving dots on your compatible Garmin Edge computer, smartwatch, or smartphone. New for the 820 series is an enhanced field of view and threat level detection, which identifies not just the presence of a car, but its size and relative speed, giving you a clear picture of the traffic environment behind you.

Why the Varia 820 is a Game-Changer for Road Safety:

• Precise Radar Tracking: Detects up to 8 approaching vehicles simultaneously. The system provides visual and audible alerts on your head unit, turning the screen "amber" for a standard approach and "red" for high-speed vehicles.

• Intelligent Brake Light: The integrated tail light features a built-in accelerometer. When the radar detects you are slowing down or stopping, the light automatically changes to a rapid flash pattern to alert following drivers of your change in speed.

• Superior Daytime Visibility: The tail light is engineered to be visible from up to 1.6km (1 mile) away in broad daylight, ensuring motorists see you long before they are even in radar range.

• Massive Connectivity: Pairs seamlessly via ANT+ with Garmin Edge devices and wearables. It also features Bluetooth connectivity, allowing you to use the Varia app on your smartphone with haptic and audio alerts.

• Multiple Light Modes: Choose from Solid, Night Flash, Day Flash, and "Peloton" mode (a dimmer flash designed to protect the eyes of riders behind you in a group).

• Compact & Aerodynamic: The sleek, vertical design mounts cleanly to almost any seatpost (including aero and D-shaped posts) without creating drag or interfering with your pedal stroke.

Technical Specifications:

• Type: Rearview Radar + Smart Tail Light

• Detection Range: Up to 140 meters

• Light Intensity: Up to 65 Lumens (Day Flash)

• Battery Life: Up to 16 hours (Day Flash) / 6 hours (Solid)

• Connectivity: ANT+ and Bluetooth

• Water Rating: IPX7 (Weatherproof)

• Weight: Approx. 71g

The Alegro Perspective: In our shop, we tell every road and gravel rider: "Once you ride with a Varia, you’ll never want to ride without one again." It completely removes the anxiety of being surprised by a silent electric car or a fast-moving truck. The 820’s ability to detect the size of the threat is a massive leap forward in safety tech. It is, quite simply, the smartest investment you can make for your personal safety.

Eyes in the Back of your Head. Precision Detection. Ride Smarter with Garmin.