Lezyne Macro Drive Duo, Dual Helmet Light Lightweight CNC machined aluminum helmet front light with integrated rear light. Constant Lumens power management drive the front LED to 400 lumens and 5 lumens for rear. Side visibility design allows 180 degree visibility and increases user safety. Rechargeable via Micro USB cable for convenience. Capable of fast High Efficiency 2 amp charging with compatible wall adapter. Includes snap-fit CM helmet mount easily adjust to many styles of helmets.