21 jewel self-winding Japanese movement 316L marine grade stainless steel case and strap Bold oversized 50mm case Windowed case back displays Automatic movement Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving Product Dimensions: 12.7 x 10.16 x 7.62 cm; 10 Grams Date First Available: 16 August 2017 Manufacturer: Rip Curl ASIN: B004D1IJQY Item model number: A222-7 SIL Department: Mens Manufacturer: Rip Curl Item Weight: 10 g Item Dimensions LxWxH: 12.7 x 10.2 x 7.6 Centimeters Description The Rip Curl Detroit Automatic is a well-constructed automatic watch that, although being from Michigan, has an accent you can understand. With this watch's marine-grade stainless steel housing and band, you'll be diving to the depths of Lake Superior in no time. The 100m water-resistant rating means you can go back again and again on your quest to find Pressie, the lesser-known-but-just-as-elusive Ness monster.