The specs are pretty poor. For a 2 x CR123A light, 150 lumens for 3 hours is pathetic. It's not even clear if the claimed output rating is ANSI FL-1. A good light will have an ANSI rating of more than twice the lumens for the same length of time or the same lumens for more than twice the time. It also only claims to be "impact resistant and water resistant" without stating any ANSI FL-1 ratings.
I was given one of these lights. Its not a bad light, although not particularly great either. The older version was labeled as a Remington. In any case, its overpriced! and the aluminum is pretty soft, I carried it in my pocket for 6 months and it wore like it had been there for years.