Alpina Men's 'Extreme Diver' Swiss Automatic Stainless Steel and Leather Casual Watch, Color:Black (Model: AL725LB4V26) GMT; brushed and polished stainless steel case (45 mm in diameter, 17 mm thick), sapphire crystal screw-down case-back, black PVD coated unidirectional rotating bezel, black dial, silver-tone luminescent hands and indices, date window at the 3 o'clock position Chronograph function features a sweep seconds hand, 30 minutes counter at the 12 o'clock position and 12 hour counter at the 6 o'clock position, screw-down crown, scratch resistant sapphire crystal, Swiss automatic movement, caliber al-725, power reserve of 42 hours, incabloc Anti shock system, water resistant to 30 ATM/300 meters/984 feet, black rubber strap, push button deployment clasp Swiss-automatic Movement Case Diameter: 45mm Water Resistant To 984 Feet