CYCPLUS L7 rear bicycle light with radar

The Cycplus L7 is a rear bicycle light with a built-in millimetre-wave radar that detects approaching vehicles from up to 160 metres away. It weighs 67 g, has a 270° viewing angle, and in radar mode the battery can last up to 36 hours.

The radar detects vehicles travelling at relative speeds of 6 to 160 km/h and monitors the space behind the cyclist in real time. When a vehicle approaches, the rider receives audible and visual alerts showing its position and the level of danger. The warning function requires a compatible bike computer.

Several modes are available, including Constant, Blinking, Breathing and Radar, plus a Peloton function that synchronises the flashing frequency of multiple lights for group rides. Settings can be changed with the button on the housing or the CYCPLUS app. The light is rated IPX6 for protection against rain and splashing water, and it mounts on the seatpost or saddle rails.