Comes with 2, high-intensity adjustable white star krypton gas lamps for enhanced brilliance and extended range (Spot to Flood). Spare lamp safely secured inside the tailcap. Self-cleaning rotary switch. 3-position On, Off, and signal. O-ring sealed for water-resistance. Individually serial numbered. Rugged, machined aluminum construction with knurled design. Water and shock-resistant. 10" length. Diameter of barrel is 1-9/16". Diameter of head is 2-1/4". Includes (2) "D" batteries.