Black Diamond Distance 1500 Headlamp Features: PowerTap™ Technology boosts beam to max setting 1500 lumens  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  Helmet compatible Submersible IP67 waterproof rating Rear red flasher   Distance 1500 Headlamp