With regulated circuitry, Princeton Tec Quad Headlamp can run on alkaline or lithium batteries. Four Ultrabright LEDs illuminate the darkest conditions with a wide flood beam. Quads housing features molecularly bonded O-ring seal for waterproof durability. With a low battery indicator, a separately molded battery tray and high-grade materials, the Quad is a popular headlamp for paddling and general outdoor use. Features: Brightness 78 lumens Bulb Type 4 Ultrabright LEDs Length 65mm Width 41mm Height 40mm Lens diameter 36mm Weight 96 grams Modes High (78 lumens for 105hr) Medium (runs for 99hr) Low (runs for 97hr) Flashing Run Time Up to 105 hr Beam Distance 50m Colour Blue Impact Resistant Not Rated Power Source 3 x AAA batteries (Included) Waterproof IPX-7 (Protected against 1m submersion) Recommended Use Watersports, Outdoors Country of Manufacture USA Other Features: Regulated LEDs maintain initial brightness Hinged Bracket Battery Power Meter Model Number: QUAD-BK Made in USA