Coast HP5TAC 121 Lumen Focusing LED Flashlight with Tactical Strobe Light output: High-121-Lumens; Low-41-Lumens Runtime: High-4-Hours 30 minutes; Low-6-Hours Beam distance: High-78-meters (255 -Feet); Low-46-meters (150 -Feet) Impact and water resistant aluminum casing; 4.65-Inch length 1 AA-Cell battery is included to allow for immediate use