Dorcy Z DRIVE PWM 500 Lumen Flashlight – AA – Aluminum, MetalClip – Black, Silver. Weather-resistant flashlight with up to 500 lumens of light features a slide focus lens to let you adjust your lighting from a spot beam to a precise target beam. Constructed of machined aircraft aluminum with a knurled, nonslip barrel grip, this flashlight is incredibly durable and has the look, feel, and finish of a much more expensive light. Flash mode allows you to signal caution during emergency situations. Flashlight with included AA batteries provides up to 15.5 hours of runtime when using 150 lumens and 3.5 hours of runtime when using 500 lumens.