Dorcy 41-2121 1,000-Lumen Pro Water-Resistant Aluminum LED Rechargeable Headlamp • 1,000 lumen headlamp on high, 450 lumens on medium, and 225 lumens on low;• Indoor/outdoor headlamp frees up hands for other tasks;• Water-resistant (IPX4) and impact-resistant to 3.28 ft. (1 m); rugged and durable aluminum construction withstands use in all kinds of locations;• Twist-focus feature adjusts beam spread from spot focus to area spread; 3 brightness settings;• Beam distance on high: 472 ft. (144 m);• Run times by brightness settings: 3 hours on high, 6.5 hours on medium, 11.5 hours on low;• 2,200 mAh 3.7-volt Li-Ion battery recharges in up to 5 hours for full performance;• Includes micro USB charging cable;