Water resistant machined aluminum flashlight. Features abination of 3-375 AND 3-390 ultra-violet LED"s and 1 focusable xenon bulb. Uses 3 C batteries not included. 9.00 in. long. Weighs .989 lbs. Lanyard included. Ideal for determining fraudulent documents where hidden ink is known to be used: driver"s lecenses credit cards vehicle registrations etc.ATTRIBUTES Batteries Included: No Bulb: 3.6 Volt Xenon 390 Nm UV LED x 3 375 Nm UV LED x 3 Burn Time: 5 Hours Carry System: Lanyard Finish: Black Anodized Material: Aluminum Output (lumens): 57 Overall Length (inches): 9.00 Power Source: C x 3 Special Features: 3 Modes Submersible: No Switch: Push Button