Cyclops CYC-HLP2000 2,000-Lumen Poseidon Rechargeable LED Headlamp • 2,000 lumens; 20 watts;• 218 yard (200 m) beam throw ;• Adjustable, elastic headband; lamp cannot be removed;• Run time up to 5 consecutive hours;• Operates on 3.7-volt 4,000 mAh Li-Ion rechargeable battery;• Includes charging cable and manual;