Louis Erard 1931 Collection Swiss Automatic Blue Dial Men's Watch 31218AA15.BDC37 Imported Self-winding automatic movement - an Eco-friendly choice for discerning customer. Powered by everyday movement of your arm Automatic self-winding movement with analog display and anti reflective sapphire dial window Date calendar, water-resistant, moon-phase Blue leather stainless steel case with blue dial Water resistant to 5 ATM / 50 meters / 165 feet : suitable for use around household sinks playing sports and swimming in shallow water but not bathing snorkeling or scuba diving