The lezyne micro drive 450xl and micro light set is a multi purpose light set that can see you safely home from the office or through the woods for an evening ride the light is a multi purpose performance led cycling light compact durable and heat dissipating cnc machined aluminum construction ultrahigh output leds delivering up to 450 lumens optional overdrive race mode toggles between overdrive and economy modes only mode memory function returns to selected mode after turning off enhanc