Rolex GMT Master 40mm 16713BNSJ Mens Automatic Stainless Steel: A Timeless Piece When it comes to luxury watches, few brands can match the prestige and quality of Rolex. The GMT Master 40mm 16713BNSJ is a… Rolex GMT Master 40mm 16713BNSJ Mens Automatic Stainless Steel: A Timeless Piece