Lezyne Hecto Drive 500XL Headlight Description: The Lezyne Hecto Drive 500XL is a compact, lightweight helmet-mounted bicycle light with up to 500 lumens of output. It's 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 user's line-of-sight for excellent visibility and enough output for casual night riding. Features: CNC aluminum construction with built-in cooling fins GoPro style mounting interface Hook & loop helmet mounting strap 500 Lumen output Built in USB stick allows for cable-free charging Run Time: 1 Hour (Blast, 500 Lumens) 2 Hours (Enduro, 200 Lumens) 4 Hours (Economy, 100 Lumens) 5.75 Hours (Day Flash, 500 Lumens) 13.5 Hours (Flash 2, 50 Lumens) 13.5 Hours (Flash 1, 50 Lumens) 15 Hours (Pulse, 50 Lumens) 20 Hours (Femto, 15 Lumens) Specifications: Brightness: 500 Lumens Battery Type: Rechargeable (USB) Run Time: Up To 20 Hours Beam Color: White Color: Black Weight: 84g