The Ravemen NT201 Smart Radar Taillight combines advanced rear-facing radar detection with powerful lighting to enhance rider awareness and safety on every ride. Designed for road, gravel, and commuter cyclists, it allows you to stay focused ahead while remaining fully informed of approaching traffic from behind. At its core, the NT201 features integrated radar technology capable of detecting vehicles up to 140 meters back with a 40Adeg coverage angle, maintaining awareness even through corners and changing road positions. Real-time visual and audible alerts are transmitted to compatible bike computers, giving riders clear, immediate feedback without distraction. Beyond radar functionality, the NT201 delivers strong visibility with up to 80 lumens of output and daytime visibility reaching as far as 1600 meters. A smart brake detection system automatically increases brightness when slowing, while the auto on/off feature conserves battery by activating only when motion is detected. Powered by a 1400mAh rechargeable battery, it offers up to 19 hours of runtime and multiple lighting modes to suit different riding conditions. Key Features Integrated Radar Detection - Alerts you to approaching vehicles up to 140 meters behind with real-time feedback High-Visibility Smart Lighting - 80-lumen output with brake detection and up to 1600m daytime visibility Long Runtime & Versatile Mounting - Up to 19 hours of battery life with seatpost and saddle rail compatibility, plus IPX6 waterproofing