The Lezyne Radar Drive is a high-performance rear bike light designed to enhance rider safety and visibility through advanced radar-based vehicle detection and powerful LED output. Its custom-tuned radar system detects rear-approaching vehicles in real time from up to 150 meters away. 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-molded 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. FEATURES: Innovative, powerful LED rear bike light Advanced radar technology 150-meters vehicle detection Disruptive 300-lumen daytime flash Up to 20 hours of battery runtime Engineered lens and optics: 270° visibility Durable, lightweight co-molded construction IPX7 waterproof with USB-C charging port Dual Bluetooth and Ant+ wireless system Multiple device connection options Pairs with React Drive Front bike light Part of the first-of-its-kind Radar React System App-based alerts with Lezyne Radar Ally app (iOS; Android) Radar alerts with compatible GPS bike computers Seven outputs modes Automatic vehicle-detection alert flash Securely mounts to most seatpost shapes Includes D-post and aero post adapters SPECS: Max Lumens: 300 Max Runtime: 20 hours Weight: 122g Dimensions: 78mm, 48.9mm, 47.6mm