Thats just a Streamlight M-3 flashlight. Nice to have hanging on the "nightstand" gun. Flick the switch one way for constant on or flick the other way for momentary on. One of the important things to know when shooting in self defense (or anytime) is what am I shooting at? If I may offer one piece of advice, get some training for those guns you have, it's a responsibility, as well as a right, to own weapons. NRA basic safety class etc. should do you right.
Pistol is a Springfield XD-40, Knife is a Corkum First Strike (which costs as much as the pistol) Cigars are Montecristo #2's that I picked up in Barcelona and I paid more for them than either the pistol or the knife!