Ebel Men's 'Sportwave Aquatica' Automatic Stainless Steel and Rubber Dress Watch, Color:Black (Model: 1215633) Automatic movement Case diameter: 45 mm Stainless steel case Durable sapphire crystal protects watch from scratches, Water resistant to 990 feet (300 M):suitable for scuba diving to a depth of 30 meters for up to 2 hours