Victorinox Swiss Army Men's 'SAF Airboss Mach 4 Deluxe' Mechanical Hand Wind Stainless Steel and Leather Casual Watch, Color:Brown (Model: 24372) Hand-Winding movement Sapphire crystal Case diameter: 45 mm Stainless steel case Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving