Amazing light output and runtime. Police Security’s Blackout Rechargeable Headlamp boasts ultra-bright 850 lumend and will stay charged for 5.5 hours! This headlamp is powered by Police Security’s 3000mAH rechargeable battery. The Blackout features a pivoting head, slide focus, three operating modes and a pivoting head for added flexibility on the job. It’s perfect for hands-free use.