Alonefire flashlight led maelstrom flashlight tactical insight defensive self defense high power best XML T6 black pressure switch 5 modes Handheld Flashlights for Sports Outdoors Camping Handheld Flashlight Led water resistant Torch Adjustable Focus Zoom very bright Tactical Light Lamp for Sports Outdoors Recreation Camping Hiking Home Traveling Emergency Car Using. Powered flashlight by 1pcs rechargeable BRC18650 Or 3pcs AAA Battery (Not Included),Reverse polarity protection: protect the LED light won't burn out if the battery installed backwared. Led flashlight have adjustable focus range for different usage stretching to adjust its focusZoomable to use anywhere,Skid-proof andwater resistant design,5 switch modes: high medium low strobe SOS. The case protrudes past the bulb end and is modestly crenellated (like a castle turret),capable of standing up securely on a flat surface to serve.this not only protects the glass and bulb,but serves as a solid defensive tool. Each of the brightnesses and flashing can be achieved by lightly pressing the green multi-function rubber button on the back of the flashlight.There is an O-ring in green, which makes it easy to see that it is in place.