SEIKO SRPD63

 Caliber 4R36 Automatic Movement: Automatic with manual winding, \~41 hr power reserve, 24 jewels, stop-second hand, day/date display
 Stainless-Steel Case: 42.5 mm diameter × 13.4 mm thickness (46.0 mm lug-to-lug), 22 mm lug width
 Water & Magnetic Resistance: 10 bar (100 m); resists 4,800 A/m
 Hardlex Crystal & LumiBrite: Durable Hardlex glass; luminous hands and indices
 Unidirectional Rotating Bezel: Essential timing function
 See-Through & Screw-Down Case Back: Exhibition movement view with secure seal
 Secure Three-Fold Clasp: Push-button release with safety lock