Rip Curl Men's 'Detroit Automatic SSS' Japanese Stainless Steel Dress Watch, Color:Silver-Toned (Model: A2405-SIL) 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