Surgical stainless steel 316L case Precision automatic movement 8 second a day variation 29 Jewels Sapphire coated mineral crystal non glare scratch resistant Engraved machined dial Day sub dial Date sub dial Open heart front dial Observation case back to view movement Heritor engraved rotor Luminous hands 10 atm water resistant 45mm diameter 51.5 case length Genuine high grade leather alligator embossed strap with engraved clasp Band Color: Black Leather; Band Width: 22mm near case; 20mm near clasp/buckle; Bezel Color: Silver; Case: Silver + Circle-shaped; Case Finish: Polished + Stainless Steel; Case Thickness: 15mm; Case Width: 45mm; 50mm with crown; Clasp / Buckle: Strap Buckle; Dial: Black + analog; Hand Color: Silver; Movement: Japanese + automatic; Time Zones: Single; Water Resistance: 10 atm;