Mini Butterball Smooth Reflector 1000 Lumens XM-L T6 LED 3.7V-18V for focused beam Flashlight Bulb Flashlight Repair Parts LED Drop-in Module lifetime over 100,000 hours(White Light) Votage rang 3.7-18v. Adopt a solid-state XM-L T6 LED cool white bulb. Increase your flashlight's brightness up to 1000 lumens. Save batteries with 2-3 times the run-time over normal incandescent. Never buy bulbs again - LED lifetime over 100,000 hours. Smooth reflector for extreme ilumination distance and tightly focused beam.