The lezyne hecto drive 350xl front light is a multi purpose performance led cycling light featuring a compact durable and heat dissipating cnc machined aluminium construction ultrahigh output led delivering up to 350 lumens mode memory function returns to selected mode after turning off 7 combined lumen and flash modes enhanced mor maximum optical reflection lens with built in side visibility integrated cable free recharging usb stick advanced li poly battery for superior run timenbs