Compare Garmin Varia RTL515 Rearview Radar with Tail Light

Compatible with the Edge bike computer, compatible Garmin device, or your smartphoneRearview radar detection alerts you to the traffic behind youRadar can sense vehicles up to 140 meters (153 yards) awayRear taillight glows red to keep you visible to those behind you as you rideEasy mounting hardware works with almost any bikeBattery provides up to 16 hours of flash-mode before requiring a charge