Nightstick Adjustable Beam Flashlight 2 AA Black. This compact flashlight features either momentary or constant-on functionality and has 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 III hard anodized finish. Power comes from 2 AA batteries (included). Specifications for Nightstick Adjustable Beam Flashlight 275 Lumens TIR Lens 2 AA: Manufacturer: Nightstick Flashlight Application: Emergency Color: Black Finish: Anodized Fabric/Material: 6061-T6 Aluminum Light Output: 275 lumens Battery Life: 50000 hours Bulb Type: CREE LED Beam Distance: 109 m Bezel Diameter: 1 in Bezel Type: 2 AA Lens Material: TIR Length: 5.8 in Weight: 4.8 oz Water Resistance Level: IPX-7 Additional Features: Beam distance of 109 meters Non-Slip Grip Textured tail-switch Adjustable flashlight beam Momentary or constant-on Battery Type: AA Included Accessories: 2-AA batteries Features of Nightstick Adjustable Beam Flashlight 275 Lumens TIR Lens 2 AA: 275 Lumens 1.5 Hour runtime Waterproof Aircraft-grade 6061-T6 aluminum housing 2 AA batteries (included) Included Accessories: 2 AA batteries Package Contents: Nightstick Adjustable Beam Flashlight 275 Lumens TIR Lens 2 AA Nightstick NSP-430: Adjustable Beam Flashlight 2 AA Black