The Exposure TraceR MK3 ReAKT Peloton Rear Light packs technology and performance into a super compact rear light. ReAKT (Ambient Kinetic Technology) is the latest innovation automatically adapting the light to conditions, flaring up to 120 lumens under braking or entering brighter environments, the addition of PELOTON mode, causes the TraceR to dim when the light from the rider behind is detected, the TraceR can still be seen. This light also features Optimised Mode Selector with 3 brightness levels, and side illumination.REAKTRear 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 street-lit areas and moving into the sunlight from the shade ... More info