I’m glad that your wife and you are ok, although your both should be pretty shaken psychologically. These scumbags scrape and wound you with their nails when they try to pry away the watch from your arm, I’ve seen terrible photographs, glad that you didn’t experience this. If you are in a safe city I’m sure they will find the perp and lock him in a cell for a long time, this is not a simple pickpocketing and no one should endure these kind of physical attacks. I personally think you did well by defending yourself. Hope the perp will feel the full force of justice when they catch him.