Streamlight has just about perfected the flash light with this one. I use the light as an elevator mechanic during the week and as a Sheriff's Deputy on the weekends. The high setting is amazing when I need it, I can see to the top of a 32 story elevator shaft. But when I change it to low I can see things close up without being blinded and the battery life is fantastic. I have used it all week with out charging it. Not continuously of course but a lot each day. It recharges quickly and is always ready. Out on the street at night it is very handy. It will light up the inside of a car and then when you need to you can tone it down to read a drivers license. Although I have not used the strobe feature in a fight to see how it works yet, it is nice to have that extra tool in my hand. Just playing around with it looks very effective. I have also dropped mine a couple of floors down an elevator shaft with no ill effects. I don't recomend this though and I was not real happy about it. I bought mine from a Police supply place and paid too much for it. My brother-in-law wanted three after seeing mine and a got his on Amazon at a great price with fantastic service.