Best choice for searching, safari wilderness, coast guard, border patrol, military, police strategic reserves, fire / rescue / emergency, vessel security, industrial oil and electrical pipeline inspections, mine inspections and hunting’s best weapon. Product features: - world leader in proprietary technology, multi-layer precision optical lens design, ultra-bright perfectly homogenous light beam - exclusive precision-engineered design, continuous optical zoom: 3.2 x(times), unmatched - super powerful 800 lumens, longest projection distance of up to 500 meters (1640 feet) - long life, endurance power, a single charge in the strongest light can last up to 5.5 hours - 95% optical efficiency and more than 85% perfectly round projection to provide the fullest rounded bright light in long or close distance - exclusive "explosion-proof" 44hw lithium polymer battery (li-polymer), can supply up to 5000 hours standby storage time - passed strict ip66 standard waterproof and dustproof tests, safe operation in any harsh environment - intelligent software control design. Aside from burst flash stages: (strong-medium-weak flash), it also has a low current warning signal - patent design ("enhance") button - immediately projects super bright light, not limited to environmental conditions when needing immediate change in light intensity. The user can instantly combine illumination signal to reach the long-distance optical signal communication - anodized harden full-body surface to meet u.S. Mil-std-810f scratch scrape resistance - tenacious strong strap for wilderness explorers or mountain climbers carrying convenience - aluminum box package provides excellent safe and secured transport or storage environment - uses germany's top high-brightness long-life led inside