Standard FlashlightHigh-intensity adjustable light beam (Spot to Flood). Recessed, pushbutton, self-cleaning, 3-position switch. Rugged, machined aluminum construction with knurled design. Anodized inside and out for improved corrosion resistance. Spare lamp safely secured inside the tailcap. Barrel Diam: 1 9/16 in [Min]; Battery Size: D; Body Material: Anodized Aluminum; Bulb Type: Krypton; Color: Red; Head Diam: 2 1/4 in; Length: 12 11/32 in; Light Intensity: 22000 lm/ft2; Number of Batteries: 3; Resistance: Water, Shock; Run Time: 10.00 h [Max]; Voltage: 4.50 VDC; Weight: 30.20 oz.