Lezyne, RADAR REACT SYSTEM, Light, Front and Rear, BlackThe most advanced front and rear bike light system with Radar technology Includes Radar Drive and a React Drive Custom wireless system connects both lights and features advanced vehicle detection Cross compatible with select ANT+ head units, This kit takes visibility and safety to the next level Features Lezyne premiere LED technology, optics and lenses Manually control both lights through Radar App React Drive Front features built in LED indicators