Exposure Tracer Mk4 Reakt Rear Light

It flares up when you brake and when the light around you gets brighter, then eases off for the rider sitting on your wheel. All of that comes from a 35g package delivering up to 200 lumens, charged over usb-c in 90 minutes. A cnc-machined aluminium body and ip67 rating mean it shrugs off a british winter. Pair it with the trace 4 front light and you are properly visible, day or night, at either

It flares up when you brake and when the light around you gets brighter, then eases off for the rider sitting on your wheel. All