Lezyne Hecto Drive 500XL Rechargable Headlight – 500 Lumens Black. Lezyne Hecto Drive 500Xl Helmet Light is a compact lightweight helmet-mounted bicycle light with up to 500 lumens of output. Its constructed from CNC-machined aluminum with built-in cooling fins providing optimal heat management and durability. With a GoPro-style mounting interface and a versatile Velcro mounting strap with a Composite Matrix base the Helmet Hecto Drive 500XL is a low-profile LED that follows the users line-of-sight for excellent visibility and enough output for casual night riding. A built in USB stick allows for cable-free charging and it has a max runtime of 20 hours. Eight output modes are on offer including a highly disruptive Daytime Flash mode.