Longines Conquest Classic Automatic Black Dial Stainless Steel Mens Watch L27864566 Self-winding automatic movement - an Eco-friendly choice for discerning customer. Powered by everyday movement of your arm Automatic self-winding movement with analog chronograph display and mineral crystal dial window Water-resistant Stainless steel bracelet and case with black dial Water resistant to 3 ATM / 30 meters / 100 feet : withstands rain and splashes of water but not showering or submersion