My modified Nuwai running a SSC P4 vs. the Surefire P60 replacement running a SSC P4. I'd guess that they're running it at the ~500mA level to get only 80 lumen out of it. IIRC, I held the lights in my left hand about 18" off the table and my Nuwai was on the left, the SF on the right (my right hand was holding the camera).