Powerful and efficient single LED blasts 200 lumen flashesEngineered to make you stand out 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 changes in brightnessEnhanced Cycling Optics expands your presence with an extra wide and long range beam compared to conventional tail lightsSpecially treated internal body disperses a radiant glow to keep nearby motorists alertUSB rechargeable internal battery lasts up to an impressive 210 hoursLow battery indicator alerts you when a charge is neededLight mode memory saves the mode you`re in before the light is turned offCompact, water resistant design only weighs 59 gramsSeatpost and seatstay mounts includedBlack6RearQRUSB200UPC/EAN/GTIN: 745025086157