The Panerai Luminor Marina 1950 3 Days Automatic features a 42mm polished steel case, a 3-day power reserve meets a P.9000 calibre automatic mechanical movement executed entirely by the label. A closer look reveals a see-through sapphire crystal back with large black Arabic numerals against the white face. Finished off with a brown alligator strap, it doesn't get anymore timeless than this.