Nitecore P20iX 4000 Lumen USB C Rechargable Flashlight Amsteel Blue Scuba Yoke Quick Fill Kit 30029.02.109 Scuba Yoke Quick Fill Kit fits the standard Scuba tank thread Gone are the days of dangerously forcing your equipment into the wrong size case or leaving it unprotected with no other options MODE OUTPUT With 5000mAh 21700 Battery RUNTIME Turbo 4000 lumen 30 min* Higher 1700 lumen 2 hr High 850 lumen 2 h 30 min Mid 300 lumen 7 hr 15 min Low 50 lumen 38 hr Ultralow 2 lumen 350 hr Strobe 4000 lumen MODE OUTPUT With 2 x CR123 Batteries RUNTIME High 1060 lumen 1 hr Mid 300 lumen 3 hr 30 min Low 50 lumen 14 hr Ultralow 2 lumen 120 hr Strobe 1060 lumen Tactical Mode There are 4 brightness and strobe modes