Clip this extremely compact, lightweight and powerful light onto your hat, and its C4 LED delivers hands-free illumination to your night maneuvers. Tough and tactical, the body is made of Type II MIL-SPEC abrasion- and corrosion-resistant anodized aircraft aluminum. Impervious to shock, IPX4 rated for water resistance, and it boasts an estimated 30,000-hour lifetime. The 28-lumen, 52-meter beam lasts up to two hours and 15 minutes. Push-button tail switch. Includes a removable clip and one AAA battery. Length: 3.5". Weight: 1 oz.