Exposure Lights TraceR Mk3 ReAKT Pelaton Rear LightLightweight 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 Auto bright adjust 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