Stuhrling Original Men's 529.33B713 Nautical Enterprise II Analog Display Swiss Quartz Black Watch Black ion plated round shaped case with Arabic numerals for tachymeter on bezel and function crowns Add and split function chronograph with 24 hour counter, 60 minute and 60 second counter sub dials Swiss-quartz Movement Case Diameter: 53mm Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving