CygoLite Metro 500 Headlight. The Cygolite Metro 500 headlight paves the way to unparalleled value and safety exactly what the commuter and avid road rider demands. This USB rechargeable lighting system features a 5 watt LED that fires up 500 lumens of steady light with advanced features like 247 Safety Technology for safer night and day riding. Its 247 Safety Technology provides a SteadyPulse mode to alert night time motorists with pulse flashes while constantly lighting your path while the DayLightning flash mode increases output to lightning like flashes for increased rider safety in peak daylight. Additionally, side illumination ports provide wider visibility to those around you without compromising beam focus. The headlight features 6 light modes, run times from 1.5 to 30 hours, and a convenient, tool free handlebar mount.