Lezyne's Mini Drive XL is incredibly small and shockingly bright. It's built with a CNC machined aluminum body, MOR Optics, and Constant Current power management that powers the LED at a steady 400 lumens. It features a USB-rechargable battery that's easy to change and a power indicator button that allows the user to check the power level any time. You can choose between economy (50 lumens/5 hours) enduro (100 lumens/3 hours), blast (200 lumens/1.3 hours) and flashing modes to optimize power. And, it includes a handlebar mount.
Lezyne Mini Drive XL