The brightest headlamp in their professional series, the Apex, has been a favorite of extreme outdoorsmen and cavers for years. The pinnacle of waterproof LED headlamp design, the Apex incorporates a single regulated Maxbright LED plus four regulated Ultrabright LEDs. The Apex is capable of a powerful spot beam or a bright flood, and two switches make changing modes intuitive. Proprietary heatsink technology allows the LEDs to burn brighter and longer. 
APX550-OD 
POWER 550 Lumens 
LAMP 1 Maxbright LED (regulated), (dimmable)4 White Ultrabright LEDs (regulated), (dimmable) 
BURN TIME 150 hours 
BATTERIES 4 AA Alkaline or Lithium 
WEIGHT 9.8oz / 279g 
WATER RESISTANT IPX7 
WARRANTY Lifetime