Fenix L2P 3 Watt 2 AA Luxeon LED High Output Mini Flashlight - 55 Lumens Uses a 1-watt 100,000-hour R bin Luxeon LED, no need for a fragile incandescent bulb Constant brightness: 46 Lumens 4-hour full brightness with Ni-MH battery Made of aerospace grade aluminum Type III hard anodized finish, highly durable