Inova T1TM-HB Lithium Powered Tactical LED Flashlight, Black High-powered, energy-efficient 50,000 hour LED with high, low, and strobe modes Mineral glass optical window with teflon seal to withstand environmental pressures Run time: high 5 hours, low 38 hours High: 120 lumens, low: 16 lumens, range 394 feet Water resistant IPX4 impact resistant 1 meter