PETZL - Duo LED 14 Headlamp, Hybrid Waterproof Helmet, 67 Lumens TOUGH AS NAILS: The DUO LED 14 Headlamp is specifically designed for caving and water sports. Features a rugged construction and is waterproof to -1 meter. LIGHT UP THE NIGHT: Includes two powerful light sources to use based on your activity. Halogen light for long-range and 14 LEDs for flood beam proximity lighting. DON'T GET CAUGHT IN THE DARK: With its max battery life at 183 hours, the DUO LED 14 is prepared for your late night adventures. The 14 LEDs give constant brightness until the batteries are nearly spent. COMFORT IS KEY: Features an adjustable, comfortable elastic headband. Also, the on/off switch can be locked to prevent accidental operation. NEXT LEVEL NIGHT VISION: Operates on four AA/LR6 batteries (included), or with optional ACCU DUO rechargeable battery pack (not included).