Intelligent and extremely lightweight rear lighting for commuting, road cycling and Time Trial. Ambient Kinetic Technology (ReAKT) enables the light to automatically flare under braking and when entering areas of higher ambient light to create a contrast in brightness.Updated with Peloton mode utilises ReAKT Technology for use in a chain gang by dimming upon detection of a rider’s front light, preventing a dazzling effect, but flaring up as a beacon at the tail of the pack. Features USB convenience, a choice of 6 burn times, DayBright flash pattern and side illumination for 180 degree visibility.Specifications:OutputLED Configuration: 1 x Red XPE-R Cree LEDLumens: Max 75BatteryBattery: 700 mAh Lithium-IonRuntime: 3hrs - 24hrsRechargeable: Micro USBCharge Time: 4hrsConstructionWeight: 35gAnodised 6063 AluminiumWater Resistance IPX6DimensionsLength: 57mmHead Diameter: 28mmAlso available in a pack with Sirius Mk7 front light. In the box: TraceR MK2 ReAKT Peloton, Seatpost bracket, Micro charge cable, Quick start guide