Lightweight rear light in a CNC aluminum body for urban commuting, road and time trial use ReAKT rear lighting that flares up automatically under braking. It can also intelligently adapt to the surrounding ambient light conditions to maintain maximum contrast and visibility, for example brightening for street lit areas and moving into sunlight from shade Peloton mode enables rear lights to automatically dim down when the front light of the rider behind is detected, preventing dazzling in the chain gang, it then flares up at the back of the pack for maximum safety Three modes, six outputs, side illumination and various aftermarket mounting options make this a superb foundation for the rear light range 324 hours of run time