Princeton Tec Apex Headlamp is the brightest head torch in Princeton Tec's professional range and is especially popular with cavers, who demand functionality as well as durability and reliability. The Apex headlamp is waterproof to 1m and comes with a comfortable and fully-adjustable three-way headband. The head torch has a powerful spot beam or a bright flood beam and its two switches make mode changes intuitive. Available in Red or Black Power: 550 Lumens 1 Maxbright LED (regulated and dimmable) 4 Ultrabright LEDs (regulated and dimmable) Burn time: 150 hours Batteries: 4 x AA Alkaline (included) or Lithium Weight: 9.8oz (279g) with batteries UL Safety Rating: Approved Class I Division 2 Groups A, B, C, D, Class II Division 2 Groups F, G, UL Temp Code: T4 Waterproof: IPX7 (1m) Princeton Tec Apex Headlamp