The Exposure TraceR MK2 ReAKT Peloton Rear Light gives you intelligent rear lighting for commuting, road cycling and Time Trial with Exposure ReAKT and Peloton Technology. ReAKT enables the light to automatically flare under braking and when entering areas of higher ambient light to create a contrast in brightness Peloton mode utilises ReAKT Technology for use in a chain gang by dimming upon detection of a riders front light, preventing a dazzling effect, but flaring up as a beacon at the tail of the pack.Exposure TraceR MK2 ReAKT Peloton Rear Light FeaturesExposure ReAKT Technology - ReAKT (Ambient Kinetic Technology) is the next generation of rear lighting, a light that adapts to the conditions of the ride. By flaring up under braking forces or automatically adjusting to the surrounding ambient light ReAKT Technology makes your rear light a beacon for safety.Exposure Peloton Mode Technology - Peloton mode utilises ReAKT Technology for use in a chain gang by dimming upon detection of a riders front light, preventing a dazzling effect, but flaring up as a beacon at the tail of the pack.Exposure TraceR MK2 ReAKT Peloton Rear Light SpecificationsLED Configuration1 x Red XPE-RLumensMax 75 (ReAKT 120)Battery700mAh Lithium-IonRuntime3 - 24 hoursCharge Time4 hoursWeight35gMaterialAnodised 6063 AluminiumWater ResistanceIP6Length