I saw this nice review of the above light:
What struck me was the atrocious runtime on high, about 30 minutes regulated at ~600 lumens and then a steep drop. An Olight S30 will spank that, and a Manker U11 will do even better than the Olight. Those who push Surefire always point to the superior build, reliability and efficiency. So how come this one has such a poor runtime?
Seems typical Surefire to me overpriced and underwhelming. Should sell well! :bigsmile:
Quote from the CPF link
Does this mean that if you want to look into a dark area while the flashlight is in daylight it will sense the light and only use low ???
I think the atrocious run-time would be down to the Intellibeam using power plus steel springs, with the driver spring attached with a metal screw, high resistance anyone 
Cheers David
If I want low, I select low. I don’t want any light to choose for me.
182$ what? A standard Convoy M2 destroys this.