This ultra-high power Kaufmann headlight uses a CREE LED and has an adjustable focus spot, offering nearly perfect optical clarity and a bright, evenly lit wide beam. After approx 5 minutes the headlamp will reduce to approx 500 lumens to prevent the LED from overheating. The adjustable straps provide a secure and comfortable fit, while being able to tilt the light up or down 90 deg. Operates off 4 x AA Batteries. Run time on max: 4 hours / Min: 8 hours. Beam distance: 300m. Lighting: Bright/Dim/Strobe. Water resistant. Easy to use, hands free lighting, even with gloves. Ideal for outdoor recreations, hiking, camping, riding, fishing, hunting etc.