Seiko 5 Sports Automatic Diver-Style Watch — SRPD51K1 Case No.: 4R36-07G0 Condition: New, never worn — comes with original box and Seiko international guarantee certificate (as shown in photos) Condition Brand new, never worn Comes with original Seiko box and Seiko guarantee card (as shown in photos) Factory protective stickers may still be present. Specifications Brand: Seiko Model: Seiko 5 Sports Automatic Diver-Style Reference: SRPD51K1 Movement: Automatic (Caliber 4R36, 24 jewels) Hacking and hand-winding capable Power reserve approx. 41 hours Case Material: Stainless steel Case Diameter: 42.5 mm (approx.) Thickness: 13.4 mm (approx.) Bezel: Unidirectional rotating, blue aluminum insert Dial: Blue sunburst with luminous indices and hands (Lumibrite coating) Crystal: Hardlex mineral glass Bracelet: Stainless steel with folding clasp and safety lock Caseback: Exhibition (see-through) with Seiko branding and movement visible Water Resistance: 10 bar / 100 meters Functions: Day-Date display (English/Spanish), central seconds, automatic winding Serial / Case Number: SRPD51K1 / 4R36-07G0 Description A modern icon from the Seiko 5 Sports line, the SRPD51K1 embodies the spirit of Seiko’s legendary diver heritage with a sleek, contemporary design. Known among collectors as part of the “New Seiko 5 Sports” series (sometimes nicknamed the “Sports 5KX”), this watch delivers robust automatic performance, everyday reliability, and a striking blue aesthetic.