With the Trek CarBack Radar tail light, you can ride with more confidence. CarBack Radar detects the presence of vehicles approaching from behind up to 240m away and alerts you audibly and visually with paired GPS headsets for enhanced awareness of your surroundings while driving.The CarBack system includes best-in-class daytime running lights that are visible from up to 2km away. Cyclists can definitely do without it when riding on shared roads.The CarBack system can warn riders of vehicles following them from a distance of just 240 m.Compatible with most GPS bike computers.Pair the CarBack system with the Trek Accessories app to view the vehicle behind you and its distance on your smartphone.The focus, blinking and range of the lights are just right to be seen in daylight up to 2km away.Four flashing modes: 90 lumen daylight flash, 25 lumen daylight flash, 5 lumen night flash and 5 lumen night flash.Visible LED lights allow you to see the state of charge of the 7+ hour battery.IPX7 waterproof rating for reliable wet driving.Equipped with Quick Connect Plus rear grip and USB-C charging cable. To be seen by drivers behind youBest-in-class visibility is provided by intermittent flashing that is visible up to 2 kilometers away in daylight.So you can see the cars behind youThe CarBack Radar can detect the presence of vehicles approaching from behind up to 240 metres away.Visible battery status indicatorThe LED indicator communicates the battery charge status via four indicators. Waterproof charging via USB-C portThe IPX7 waterproof rating ensures operation in all conditions and the USB-C port makes charging quick and easy.Compact designThe smaller size makes the CarBack radar easier to mount on smaller frames and those with under saddlebags.Universal ANT+ connectivityCarBack can be paired with most bike computers so you can use it with your head-mounted GPS unit.Smartphone CompatibleLink CarBack to your phone via the Trek Accessory app, which will show you the curren