120 lumen red tail light with 7 lighting modes engineered for road cyclistsContinuous array of LEDs work in unison to shine an extra wide and powerful glowUltra low profile, water resistant design only weighs 35 gramsUSB rechargeable with 1:15 to 70 hours of run time, and 3 hour recharge timeBuilt-in 24/7 Safety Technology gives you a powerful selection of 7 night and day modes (DayLightning High Flash, High Steady, Group Low Steady, SteadyPulse®, Zoom, Bzzz Flash, Low Flash)Zoom mode signals those around you with a gentle change in brightnessAll-new on Hotrod, Bzzz Flash mode alerts those around you with highly visible fast buzz-like flashesLow battery indicator alerts you when a charge is neededLight mode memory saves the mode you`re in before the light is turned offVersatite flexible mount conveniently attaches to seat posts including aerobarsDesigned, engineered, and assembled in the USABlack7RearSeatpostUSB120UPC/EAN/GTIN: 745025016024