Compact, durable bike light constructed from CNCmachined aluminum\n Equipped with a highoutput LED emitter capable of providing up to 400 lumens as well as a Daytime Flash mode\n Features eight output modes and cutouts for side visibility as well as an impressive max runtime of 20 hours\n Charging is made simple with an integrated, cablefree USB stick, and it securely straps to a variety of handlebar shapes and sizes