I have some Marley Liberate XLBT Headphones where one of the screws came out of the the side. Not sure how. I was told to that I would need an 1.5mm Allen Wrench but I don't know where to find the screws that are used by that. Any help would be great. Even the name of the screws.

I tried contacting them but they didn't know and sending in warranty information its been over a week and no response...