Advance Bravely - Radar taillights to look behind you instead. RECOGNIZE SAME SPEED - Targets traveling at the same speed or away from the vehicle will not trigger the radar. HIGH SPEED RESPONSE - Detecting fast approaching vehicles emits a warning light alert until it passes this vehicle. Vehicle Grade Radar - FMCW modulated radar speed measurement algorithm, real-time accurate detection of vehicles moving towards the tail light within 30 meters.(Cars, motorcycles, electric vehicles, bicycles, etc.) and automatically filter out vehicles moving at the same speed or far away from you. SENSITIVE SENSOR - Radar Responds Quickly, Active safety assistant for fearless night rides. Radar detection 54 - Large-angle radar that accurately monitors vehicles approaching from behind when turning. Other radars on the market only have a detection angle of about 30 Large Floodlighting - LED*20 red light beads bring powerful brightness, night and foggy day riding effectively warn the rear car, protect your riding safety. Switch - Individual control of normal light and radar or combined light and radar for use in different environments. Lighting Customization - Designed to meet the needs of different environments, the radar mode can be used with regular lights or turned on separately to save power. High Capacity Battery - TYPE-C fast charging, up to 36 hours of continuous use on a single charge. (Longer if only radar mode is turned on). Goodbye to blind corners - Detects and accurately warns vehicles behind you even when you're turning. Dual Bracket Mount - More user-friendly mounting bracket without additional mounting tools. IPX64 Waterproof - Effectively protects the taillight in heavy rain and enjoys riding at all times. Colour:Black Material:ABS Package Contents: 1 * Bicycle Radar Tail Light 1 * USB Cable 1 * Mount 1 * English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.