This is a flash trigger for Godox strobes. Sony-specific. The initial models of the XPro and XPro2 had plastic hot shoes, but this is the latest XPro2 model, so it has a metal hot shoe. I upgraded from the XPro to the XPro2, but I sold my camera shortly after, so I only tested it once indoors and haven't used it since. It has been stored in a dehumidified storage box. Almost new, fully functional, and a genuine domestic product. #Godox #SONY