Princeton Tec EOS Headlamp takes self-contained battery lighting to the next level! The combination of a Maxbright 1 watt LED and the Princeton Tec-designed optimized lens/collimator maximizes the beam by balancing long-throw with localized lighting. Recognizing that different amounts of light are needed for different activities, these flashlights are equipped with 3 brightness levels and a blinking mode; further ensuring that the Princeton EOS Head Lamp Flashlight will remain at constant brightness as long as the batteries have sufficient voltage. The use of high-grade materials in these Princeton Tec flashlights ensures durability and strong resistance to water, weather, and environmental conditions. With its reliable durability, the Princeton Tec EOS 70 Lumen Headlamp is ideal for climbing, running, paddling, caving, camping and work of all kinds.