Clasp: Fold Around Clasp. The clasp from the watch to make it a lot easier and quicker with the user to open and fold the case over to keep it safe. The precision of every movement – officially certified like a chronometer because of the Swiss Official Chronometer Testing Institute https://rolex-mens-watches-online85172.mybuzzblog.com/17784469/rolex-submariner-2015-things-to-know-before-you-buy