CYGOLITE Dash– 600 Pro, 520, 460 Lumen Bicycle Light Models– 5 Night & 3 Daytime Modes– Ultra Compact– IP64 Water Resistant– Sturdy Flexible Mount– USB Rechargeable– for Aero Road, Commuter Bicycles Black Brown Accepts Tip Off Rings only Accepts Tip Off Rings only Additional Features: Stainless Pocket Belt Clip tail light features 5 modes Both feature SteadyPulse mode to alert motorists with attention grabbing pulses while its overlapping steady beam constantly lights the way at night Both feature DayLightning to make you stand out in broad daylight with lightning like flashes Low battery indicator alerts you when a charge is needed Light mode memory saves the mode you're in before the light is turned off VersatiteTM flexible mount conveniently attaches to most standard and aero stylesRun Times8 HEADLIGHT MODES (run time in hours): Boost (1:15) Powerful 520 lumen bike headlight and highly visible 30 lumen tail light combo light set with a long range and extra wide beam