The USB rechargeable Metro 550 strikes the perfect balance of amazing performance, safety, and versatility. Experience the unquestionable power of 550 lumens at night, optimized through its cycling tuned optics to maximize your line of sight with exceptional brightness and clarity. With 6 powerful lighting modes (3 steady, 2 flashing, 1 walking), and up to 150 hours of illumination on a single charge, the Metro 550 has you covered night and day. In addition to the steady brightness modes, patent pending Steady Pulse mode alerts motorists with attention grabbing flashes while an overlapping steady beam constantly lights your way at night. For use as daytime running lights, eye catching Day Lightning mode emits a boosted 600 lumens of lightning-like flashes to make you stand out in broad daylight. The sturdy quick release handlebar mount keeps the light securely fastened in rough terrain while allowing quick and easy detachment as needed for use as a handy flashlight or for storage while not in use. Buy with confidence in Cygolite, as every light is designed, engineered, and assembled in the USA to rigorous quality and testing protocols - outshining and outlasting cheap imitations. For service, email and phone support with live customer personnel offers you fast and easy assistance from right here in the USA.