The Energizer High Lumen Hybrid Power Industrial headlamp features up to 1000 lumens and up to 55 hours of run time. It can be detatched from the base and headstrap to be used as a compact handheld flashlight. It's made with a durable metal construction and a shatterproof lens. The non-slip strap works well with hard hats and prevents slipping. Can be powered by rechargeable lithium ion batteries or the included CR123 batteries.