This waterproof ultra slim LED pen light lasts up to 100，000 hours and includes a glare guard and three AAAA alkaline batteries. The blue LED UV bulb features up to 24 hours of burn time. This bright LED penlight has a battery life 20 times greater than a standard flashlight and goes anywhere you need it. The ultraviolet light is perfect for fluorescent detection of fraudulent documents， finding leaks in automotive maintenance and repair， and for use in forensic investigations.

• High intensity LED
• Individually serialized for positive identification
• IPX4 rated water-resistant
• 2-meter impact resistance tested
• Removable pocket clip
• Glare guard protector and batteries included
• 365-NM UV light source

The Stylus penlight's machined aluminum case is black with a non-slip， knurled grip. It has a momentary blink switch plus constant "on". Measuring 6-1/4 inches long with a 0.375-inch diameter， the Stylus weighs 1.10 ounces. Each Stylus is individually serialized， and features a pocket clip as well as a lifetime warranty. Carry Stylus anywhere. It's the dependable， comfortable lighting companion.

Water resistant and 2-meter impact resistance tested， the Stylus is durably constructed for use in extreme conditions.

As forgers and counterfeiters become more sophisticated， officials are finding new ways to create fraudulent-resistant documents. One of the most effective methods is to imprint hidden ink which is extremely difficult to reproduce and is only detectable by using ultraviolet light. All states will soon incorporate such images in their driver's licenses. They are also used on credit cards， vehicle registration cards， currencies， checks， and other important documents. Once these new documents are in place， it will be up to those of you on the front lines to identify the fakes， frauds and forgers. When you shine a Streamlight ultraviolet flashlight on a document with hidden graphics， you'll see the "invisible" graphics. If no image appears， you will know instantly that the document is fraudulent.

Streamlight ultraviolet lights are used as an important forensic tool by medical examiners to quickly detect the presence of proteins at crime scenes. They are also perfect for use in finding fluorescent dyes used in many leak detection applications such as automotive maintenance and repair， and air conditioning system servicing.