A flashlight is an essential tool and functionality should never suffer for the sake of design. The INOVA® X-Series is an example of one of those rare product offerings that effectively combines brilliant engineering and bold looks in a highly purposeful package. Ruggedly constructed and beautifully finished, the X-Series started the LED flashlight revolution. Today, the X-Series is still recognized as being the ultimate collection of flashlights in the field, and has earned the praise of countless users who have come to depend on them, as well as curators at one of the world's most famous museums of modern art where a sample has been placed on permanent display. Long hours of useable light, powerful beams, unmatched quality and superior styling all make the X-Series the choice for those who want a flashlight that provides uncompromising performance. If there's an icon among flashlights, it is the INOVA® X5® . The first of its kind, the X5 introduced the world to the power of LED technology in handheld, battery-operated lights. Made with fanatical care and design elegance from aerospace-grade aluminum, it is on display at one of the world's great museums of modern art. The perfect long-term duty flashlight, the X5's advanced lithium batteries have an amazing 10-year shelf life for reliable performance. FEATURES AND BENEFITS: Impact-Resistant Stainless-Steel Head protects the LED cluster and O-ring provides ultra-tight seal Water-Resistant Construction protects it from the elements Five High-Powered energy-efficient lifetime LEDs Aerospace-Grade Aluminum Body with military-spec anodized finish O-Ring ensures seal integrity and threads are anodized for reliability Tactical End-Cap Switch activates momentary on, constant on/off and lockout mode Anodized Finishes in black Generous Size Lanyard Hole for easy threading Limited Lifetime Warranty USA Try Me Packaging allows lighting demonstration SPECIFICATIONS: Weight: 3.56 oz LED Rating: N/A Battery Type: 2-123A Lithium Run Time: Up to 20 hours Effective Range: Up to 120 feet Signal Visibility: Up to 1.75 miles