The SR30 radar light provides you with the ability to detect vehicles approaching from behind. The light is visible at an angle of 220 degrees and can detect cars up to 150 meters away. The battery life can last up to 25 hours and it is recharged using USB-C. The light connects to your computer or other device via Bluetooth 5.0 or ANT+. Mounts for D-type, round, and aero seatposts are included.