H600w Mk II 18650 XM-L2 Headlamp Neutral White
Light Output (runtimes)    High:         H1 1020 Lm (PID, approx 2 hr)   or    H2  620 Lm (PID, approx 2.5 hrs) / 330 Lm (3.9 hrs) / 150 Lm (11 hrs)    Medium:    M1 65 Lm (30 hrs)    or    M2   30 Lm (66 hrs) / 11 Lm (172 hrs)    Low:         L1   3.5 Lm (16 days)   or    L2   0.4 Lm (2.5 months) / 0.06 Lm (4.6 months) / 0.01 Lm (5.5 months)    Beacon Strobe Mode: 0.2Hz Beacon at Low / 0.2Hz Beacon at H1 / 4Hz Strobe at H1 / 19Hz Strobe at H1         Light output are ANSI out the front (OTF) values. Runtimes tested (and parasitic drain estimated) using ZL631 batteries. Runtimes of the two PID controlled levels (1020Lm and 620Lm) vary greatly with ambient temperature and air ciculation.