Princeton Tec Quad Tactical 60 Lumen Headlamp. The Quad Tactical Headlamp was designed to meet the specialized needs of outdoor sportsmen and the US military. The Quad Tactical augments the original Quad’s lightweight and durable design with three interchangeable lens covers which filter the four Ultrabright, regulated LED s into red, blue or green light. Quad provides a vast amount of area light for all purpose needs and performing up-close tasks. The light beam is smooth and wide allowing you to work with your hands without glare or reflection. The housing is constructed to endure all conditions. With its robust walls, superior materials, and waterproof design, the Quad Tactical is suited for almost any environment and is powered by 3 AAA batteries allowing for a compact footprint.