he biggest and brightest headlamp in our professional series, the Apex has been a favorite of extreme outdoorsmen and cavers for years. Truly the pinnacle of waterproof LED headlamp design, the Apex combines the qualities of both the Eos and the Quad. With a single Regulated Maxbright LED partnered with Four Regulated Ultrabright LEDs, the Apex provides either a powerful spot beam or a bright flood, and switching between the two is incredibly easy. The four Ultrabright LEDs come in red, green, or white in order to suit your personal preference. Proprietary heatsink technology allows the LEDs to burn brighter and longer. The Apex is compatible with alkaline, lithium, and rechargeable batteries..SPECIFICATIONS.POWER 200 Lumens.LAMP 4 Ultrabright LEDs, Maxbright LED.BURN TIME 150 Hours.BATTERIES 4 AA Alkaline, Lithium or NiHM Rechargeable.WEIGHT 279 Grams.UL RATING APPROVED. Class I Division 2 Groups A, B, C & D Class II Division 2 Groups F & G.UL TEMP CODE T4.