Lezyne's Super Drive XL is small, compact, and powerful. It's built with a CNC machined aluminum body, MOR Optics, and Constant Current power management drive the LED at a steady 500 lumens. It features an easy-to-change battery compartment and a power indicator button that allows the user to check the power level at any time. You can choose between economy (175 lumens/5 hours) enduro (350 lumens/2.25 hours), blast (500 lumens/1.75 hours) and flashing modes to optimize power and battery life. And, it includes a handlebar mount.