Radar React - the sixth sense for cycling. The smart light system combines a bright rear light with state-of-the-art radar technology. Like an invisible rear-view mirror, it recognises vehicles from up to 150 m away and warns you visually and/or acoustically, either via the Lezyne Radar app on your smartphone or via your bike computer. Thanks to the dual wireless system (Bluetooth & ANT+), you can easily pair the system with the Lezyne Radar app, numerous ANT+ head units or the React Drive front light. Installation is easy and requires no tools: the handlebar mount and various rear light adapters fit all standard handlebars and seat posts (aero profiles are included). Complete system "Radar React System": The networked light duo consisting of Radar Drive rear light and React Drive front light noticeably increases your visibility: The rear light recognises approaching vehicles and transmits warnings directly to the Cockpit. There, integrated LED signals alert you to the approaching vehicle. Both lights can be controlled manually in the app, are IPX7 waterproof and charge via USB-C connection.