Nixon 51-30 Tide Waterproof & Durable Men&rsquo;s Stainless Steel Watch (51mm. Stainless Steel Band) Made in USA or Imported Swiss Quartz movement Case diameter: 52 mm Stainless steel case Scratch resistant mineral Water resistant to 990 feet (300 M):suitable for scuba diving to a depth of 30 meters for up to 2 hours