Nitecore Detective 750-Lumens CREE XM-L2 LED Flashlight, Grey CREE XM-L2 T6 Runs on: 2 x CR123A batteries or 1 x 18650 battery (NOT Included) Max Output/Runtime: 750 Lumens/1.75 Hours ; Min Output/Runtime: .1 Lumens/450 Hours Peak beam intensity: 6000cd ; Beam Distance: 169 Yards (155 meters) Waterproof in accordance with IPX-8 (two meters submersible)