Constant-on use:
The amount of light this device creates is quite spectacular. Initial readings put it in the top 10 for throw, and in the top 3 for overall output for lights reviewed on this site! However, this level of output is very brief.
After only 8 minutes, it has lost 77.9% of its output. This means that after 8 minutes it has less "throw" and just slightly more overall output than a Surefire G2, and significantly less throw and overall output than a Surefire M3. It will, however, maintain this lower level of output for about 1 hour 40 minutes continuous, and it demonstrates excellent regulation during this period.
To be fair, the instructions do state "When you run your flashlight at maximum power for a period, it will automatically return to continuous drive mode. This prevents the flashlight from overheating, and secures you optimal battery life time". However, they don't mention that output simply plummets for the first 8 minutes from the moment it is turned on. There is absolutely no regulated high output period at all that I can find.