The Apex series is the culmination of over 35 years of engineering, design, and US manufacturing knowledge.Regulated circuitry, proprietary heatsink technology, and waterproof integrity set the foundation behind the performance of the Apex series. Whether your requirements are for long burn time, light weight, or cold weatherthere is an Apex to fit your needs. All blasting out 200 lumens.When you need the power, versatility, and ruggedness of our Apex headlamp, but your adventures require a lighter weight, you need the Apex Pro. Over 100 grams lighter than our original Apex, the lighter and faster Apex Pro was designed with the unique and ever evolving needs of professional athletes and extreme adventurers in mind. The Apex Pro is powered by 2 CR123 lithium batteries protected in a highly durable and waterproofcasing. Built for professionals, perfect for all users.