Coast HP17TAC Focusing 615 Lumen LED Flashlight with Tactical Strobe Light output: High - 615 lumens; Low - 64 lumens Runtime: High - 15 hours 15 minutes; Low - 51 hours 15 minutes Beam distance: High - 269 meters (882 ft); Low - 47 meters (154 ft) Impact and water resistant casing. 13.12 inch length 3 X D batteries are included to allow for immediate use