IWC Schaffhausen Aquatimer Automatic is a professional dive watch that pairs robust underwater performance with everyday wearability, highlighted by a 42 mm stainless steel case and 30 bar water resistance. Key attributes: Black | Stainless steel | Stainless steel | Water resistance 30 bar | Sapphire crystal with antireflective coating | Power reserve 120 hours | Automatic winding (IWC calibre 32111) | IWC bracelet quick-change system | Mechanical internal/external rotating bezel (SafeDive) | Date display | Screw-in crown | Black dial | Convex sapphire glass with antireflective coating | Diver-style rotating bezel with SafeDive system | Stainless steel bracelet | Dimensions & fit: Case diameter: 42 mm | Case height: 14.1 mm | Strap width: 22 mm | Composition & care: Case: Stainless steel | Bracelet: Stainless steel | Crystal: Sapphire | Rinse with fresh water after exposure to seawater; clean with a soft cloth; have water-resistance checked annually and a full service carried out approximately every 5 years at an authorized service center.