The HellFighter LightStorm X-19 with a 1.75” head offers outputs to 500 lumens and is available in both standard 12 and 9 volt lithium battery versions and new 4500mAh rechargeable systems with run times approaching nearly two hours! Waterproof, Shock Isolated, MilSpec, also available in IR versions. Length: 8” Width Head: 1.75” Width Body: 30MM Material: Mil Std 6061 511 T6 Aircraft Aluminum Alloy, Body functions as heat sink. Lamp: Xenon/Halogen/Argon High Intensity vapor-sealed, incandescent High Temperature Filament Bulb. Wattage: 6.5 watts Voltage: 9 Volts Nominal, 7.2 volts in rechargeable mode. Output: 350 Lumens/220 Lumens Rechargeable Runtime: To 1 hour, dependent on battery performance. 3 hour with LED or rechargable Lamp Mounting: Permanent Soldered, Spring Isolated Shock resistent on tool axis to 1250G. Lens: Optical Grade Borosilicate Glass, Iridium coated for 5500k daylight equivalent beam. Reflector: Parabolic Shaped silver halide coated over etch-stippled finish to eliminate filament ring shadows. Remote Switch (optional accessory): Pressure pad, waterproof 6 inch cable, replaces tail cap. Power source: (3) 123 series Lithium Batteries Rechargeable, (1)3.7 volt 2400MA battery.