Exposure Boost DB & Boost-R Reakt Light Set The definitive, lightweight front and rear light set for urban commuting or daytime visibility. Utilising the form of the Trace and Trace R lights the BOOST and BOOST-R RA offer more Lumens out front, 325 or twice the run time, up to 48 hours, to safe guard the rear; USB charging for convenience, a choice of 6 burn times, DayBright pulse pattern and a specific lens design to ensure that the one LED has the power to penetrate through the urban traffic and side illumination for 360 visibility from over 1 kilometre away, with the BOOST-R RA packed with ReAKT and Peloton technology to make sure this front and rear pack is ready for any activity day or night. Intelligent Thermal Management - Patented circuitry within the light will reduce power to the LEDs, if they go beyond the optimum temperature, keeping the light as efficient as possible to maximise output and battery capacity. Once the light has cooled, the power is automatically restored.