Streamlight 74201 Tactical Strion 5.3-Inch Flashlight without Mount, Black Anodized Machined Aircraft Aluminum case Borofloat High Temperature Glass Lens 3.6 Volt, 6.12 Watt, 1.7A (type T-11/2 ), xenon gas-filled, Bi-Pin bulb; spare lamp in the tailcap Run Time: 70 minutes continuous use between charges 5-1/4-Inch length