Vestal Men's 'Alpha Bravo Rubber' Quartz Stainless Steel and Polyurethane Casual Watch, Color:Black (Model: ALPU007) Case: 37.5mm stainless steel. 316l marine grade Band: 20mm polyurethane. Custom designed Crystal: vintage-inspired domed hardened mineral Movement: 3-hand premium analog. Made in japan Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving