SEIKO SRPD55

 Caliber 4R36 Movement: Automatic with manual winding, \~41 hr power reserve, 24 jewels, stop-second & day/date display
 Stainless-Steel Case: 42.5 mm diameter × 13.4 mm thickness (46 mm lug-to-lug), 22 mm lug width
 Water & Magnetic Resistance: 10 bar (100 m) water-resistant; withstands 4,800 A/m magnetic fields
 Hardlex Crystal & LumiBrite: Durable glass with luminous hands and indices for low-light visibility
 Unidirectional Rotating Bezel: Precise timing for dive and everyday use
 See-Through Screw-Down Case Back: Showcases the movement while ensuring a secure seal
 Three-Fold Clasp: Secure lock with push-button release
 Weight: 170 g