I didn't need an intrinsically safe flashlight, but I wanted a rugged, waterproof light to keep in the emergency kit I keep in my car. I wanted a push button switch that could be used with one hand, rather than a twist top that requires two hands to operate. I also wanted a simple on/off switch, rather than having to cycle through the annoying dozen modes that most LED flashlights have. This light fit the bill.At just over 5.5 inches it's small enough to fit in a glove box, drawer, pocket, or emergency kit. Together with Energizer lithium batteries (purchased separately on Amazon), that boast a 20 year shelf life, I'm confident this light will be ready when needed.