Argo LED Headlamp, Uses 3 AAA-Cell Batteries Unbreakable Polycarbonate Lens LED Technology, Impervious to Shock With A 50,000 Hour Lifetime Yellow ABS Case; 90 Degree Tilting Head Run time: 150 lumens for 3 hours, 100 lumens for 4-1/2- hours, 45 lumens for 30 hours