BTW, the lumens I used in my experiments were 250 with one flashlight and 500 with another flashlight. I have another one that has as much as 1,100 lumens output in high mode but I did not experiment with that outside yet and I'm not sure if I really need to. After seeing what 500 lumens can do on strobe mode under lighted conditions I can already imagine what 1,000 lumens would do. Again, to make my understanding clear I now believe the strobe function to be useful only to distract, disorient and disrupt but NOT to temporarily blind the assailant. I would rather use the high output mode at night to blind someone or take away their vision. And I still prefer to blind/take away vision over disorienting or distracting.