Zebralight H602W Mk II Floody 18650 XM-L2 Headlamp Neutral White Zebralight H602W Mk II Floody 18650 XM-L2 Headlamp Neutral White PID thermal regulated outputs Battery capacity indicator (LED flashes 1-4 times, 4 short clicks to start) Automatic stepping down from High to Medium, and from Medium to Low when battery capacity is low Automatic stepping down from High to Medium, and from Medium to Low when battery capacity is lowBuiltin over-discharging protection (2.7V cutoff)