ArmyTek Prime A1 Pro Black Efficient TIR-optics for superb light and Cree XM-L2 for amazing brightness Side switch for simple and comfortable one-hand operation Compact and lightweight flashlight of guaranteed durability stands up harsh impacts and fallings from the 10 meters Total protection from water, dirt and dust penetration  flashlight continues to work even at the depth of 10 meters Powered by widespread  batteries, which you can buy anywhere