Seiko SRPD51 5 Sports Day-Date Blue Dial Silver Stainless Steel
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Product Description
Seiko 5 Sports SRPD51K1 Automatic
The Seiko SRPD51K1 belongs to the 5 Sports lineup, Seiko’s automatic everyday sports watch family that balances mechanical heritage with modern utility. Inside is the in-house Caliber 4R36, an automatic movement with manual winding, 24 jewels, and approximately 41 hours of power reserve. A stop-second-hand function lets you set the time precisely against a reference signal.
Case, Dial, and Bracelet
The 42.5mm stainless steel case measures 13.4mm thick and 46.0mm lug-to-lug, with a 22mm lug width. A Hardlex crystal protects the blue dial, where LumiBrite-treated hands and applied indexes provide low-light legibility. Day and date sit at three o’clock. The matching stainless steel bracelet secures with a three-fold clasp featuring a push-button release and a safety lock.
Specifications
Movement: Seiko Caliber 4R36 automatic with manual winding, 24 jewels, ~41 hour power reserve. Case: stainless steel, 42.5mm diameter, 13.4mm thickness, 46.0mm lug-to-lug, exhibition caseback. Crystal: Hardlex. Dial: blue with LumiBrite on hands and indexes. Functions: day-date display, stop-second. Water resistance: 10 bar (100m). Bracelet: stainless steel with three-fold push-button clasp. Reference: SRPD51K1 (Japan domestic model).