200 lumen flashes demand attention in broad daylight and at nightBuilt-in 24/7 Safety Technology gives you a powerful selection of 6 day and night modes (Steady, Zoom, SteadyPulse, Triple Flash, DayLightning Flash, Random Flash)Freely adjust the brightness of Steady mode and the flash tempo of the flashing modes with the simple 2-button interfaceSteadyPulse mode features a steady beam to help motorists gauge their distance while overlapping pulses keep them alert at nightDayLightning mode emits lightning-like flashes to highlight your presence in the brightest of daytime hoursZoom mode signals those around you with a gentle change in brightnessEnhanced Cycling Optics expands your presence with an extra wide and long range beam compared to conventional tail lightsLow battery indicator alerts you when a charge is neededLight mode memory saves the mode you`re in before the light is turned offUSB rechargeable with 2 to 210 hours of run time Rack mount compatibleBlack6RearSeatpost/RackUSB200UPC/EAN/GTIN: 745025096309