Design and Details Powertap technology boosts beam to max setting 1500 lumens and 117 meters, dims automatically after 10 seconds to save battery unless customized by user Constant output programming provides continuous light before dropping to reserve power mode One full battery lasts 8 hours at 300 lumens; two full batteries last 8 hours at 600 lumens Comfort cradle provides contoured, bounce-free fit and dispersed padding and can be used with removeable top strap for additional security in technical terrain Multifaceted optical lens design provides a combination of depth lighting to better spot obstacles and smooth, diffuse light for consistent visibility Rechargeable, interchangeable magnetic battery pack can be quickly switched with one hand and features an integrated red rear flasher Helmet compatible User-accessed powertap technology in temperature control mode allows for continuous 1500 lumen output if environmental conditions allow for safe/functional operation