Garmin Varia RTL515 Rearview Radar Tail Light

The world's first cycling radar, Varia helps create a safer cycling environment by warning cyclists of vehicles approaching from behind up to 153 yards (140 meters). The radar tail light also warns approaching vehicles of a cyclist ahead. Works independently or integrates seamlessly with compatible Edge cycling computers. Edge computer or Varia head unit can show multiple approaching vehicles and indicates the relative speed of approach and threat level.

• World's first cycling radar that warns of vehicles approaching from behind up to 153 yards (140 meters)
  
  
• Works independently and wirelessly integrates with compatible Edge® cycling computers
  
  
• Edge computer or Varia head unit can detect multiple vehicles and indicates the relative speed of approach and threat level
  
  
• Tail light unit brightens and flashes to notify approaching traffic of a cyclist ahead