The light can operate independently as a taillight featuring its own unique flash pattern that’s triggered when a vehicle is detected.The Radar Drive can seamlessly pair with the Lezyne React Drive front bike light to create an innovative system. This system can operate independently of a phone app or bike computer, providing audio and visual alerts through the React Drive’s built-in features. Alternatively, when paired with compatible GPS bike computers or the Lezyne Radar Ally smartphone app, it delivers real-time audio and visual alerts.The light offers seven output modes, including a highly disruptive 300-lumen daytime flash. Its co-moulded construction is durable, waterproof (IPX7), compact, and boasts its own unique styling. Additional features include a USB-C charging port, up to 20 hours of battery runtime, and a versatile strap-mount system compatible with round, aero, and D-shaped seatposts.• Engineered lens and optics for superior visibility • Durable, yet elegant co-molded construction• Wide range detection alerts of approaching vehicles from up to 150-meters away• Dual Bluetooth and Ant+ wireless system• Connects to: Lezyne Radar App, multiple Ant+ head units, React Drive Front• Radar app features visual and audio alerts, and controls connected lights• Seven outputs modes with Daytime Visibility and up to 300 lumens• Momentary alert flash automatically activates for approaching vehicles• Up to 20 hours of battery runtime• Versatile strap securely mounts to most seatpost shapes• Includes D-post and aero post adapters• IPX7 waterproof design with USB-C charging portRadar taillight, vehicle detection, 300 lumens, bluetooth & ant+, connects to app or gps units, usb-c