The NSP-420 Adjustable Beam Multi-Function Flashlight uses LED rated at 275 lumens that works in conjunction with a TIR lens to create a usable beam distance of 133 meters. This compact flashlight features momentary or constant-on functionality, user-selectable high, medium or low-brightness settings and a rotating bezel ring that allows the user to adjust the focus of the beam. The housing and tail-cap are made from aircraft-grade 6061-T6 aluminum and have a Type II hard anodized finish. Power comes from 3 AAA batteries (included). NightStick®, NSP-420, Beam Flashlight, Series: NSP, 275/115/45 Lumens, Adjustable Beam, 50000 hr Average Life, AAA Battery, 3 Batteries, Black, 6061-T6 Aluminum Housing Material, IPX7 Enclosure, 1.3 in Dia x 4.5 in L Dimensions