Graham Silverstone Stowe GMT Men's Automatic Chronograph Watch 2BLCD.W04A 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 sapphire crystal dial window Date calendar, water-resistant, chronograph Black rubber stainless steel case with white dial Water resistant to 10 ATM / 100 meters / 330 feet : suitable for snorkeling as well as swimming but not diving