if the main power and selection button is on the back by the battery pack what is the green power level button on the actual headlamp for
Both buttons operate the light in exactly the same way. You have a choice of which one you want to use.
Hello I have one of these and the batteries were going dead I changed the batteries and the light won’t turn on at all I’ve changed the batteries three times all new batteries.
Sorry to hear that. Please call support at 815-223-3393 mon-fri 8-5. We're happy to help.