Garmin Varia RearView 820 Radar Tail Light

Reliable rearview radar with our most powerful and precise radar tracking technology detects vehicles approaching from behind and gives audible and visual alerts on your compatible Edge cycling computer, Garmin smartwatch or on the Varia app on your smartphone, A bright tail light provides visibility from up to 2 km (1.24 miles) away to help you be more visible to motorists approaching from behind, Get up to 24 hours of battery life in day flash mode and up to 30 hours in radar-only mode, See visual alerts for small, medium and large vehicles approaching, and see the movement of a vehicle and its threat level, Show other cyclists or motorists that you’re slowing or stopping with a brake light that displays a unique flash pattern, Same-speed tracking means you can continue to stay alert to vehicles that are following behind at the same speed or attempting to pass (tracking may be unavailable at slower speeds or when radar is obstructed)