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Seiko - Brand New

Seiko Prospex "Turtle" Save The Ocean Special Edition - SRPF77

  • 45.0 mm case
  • Sapphire crystal
Sale price $500.00
Regular price $625.00
Sold out

About this timepiece

Deep, rich and beautifully atmospheric, the Seiko Prospex Save the Ocean Special Edition (ref. SRPF77) is a "Manta Ray" diver that pictures the sea as its namesake might see it. Darker shades of blue grade across the dial like sunlight fading on its way into the depths, and a stamped wave pattern gives the surface gentle motion. A black ceramic unidirectional elapsed-time bezel and a deep blue silicone strap complete the palette on a 45mm stainless steel case inspired by Seiko's best-known diving styles.

Within, Seiko's caliber 4R36 automatic movement offers 24 jewels, 21,600 vibrations per hour and approximately 41 hours of power reserve, with manual winding when it is wanted. A sapphire crystal with a magnifier and an inner anti-reflective coating makes the day/date display easy to read, and LumiBrite on the hands, indexes and bezel glows clearly in low light. Sealed by a screw-down crown and a screw case back marked SPECIAL EDITION, it is rated for 200 meters of diver's water resistance.

Features

  • "Manta Ray" Special Edition – a Save the Ocean Special Edition with SPECIAL EDITION on the case back.
  • Dark gradient blue dial – stamped with a wave pattern.
  • Black ceramic bezel – unidirectional and luminous for timing dives.
  • Magnified sapphire crystal – with an inner anti-reflective coating over the day/date display.
  • Caliber 4R36 automatic – 24 jewels and approximately 41 hours of power reserve, with manual winding.

Specifications

  • Reference: SRPF77
  • Collection: Prospex Sea (Save the Ocean Special Edition)
  • Gender: Men's
  • Caliber Number: 4R36
  • Movement Type: Automatic with manual winding
  • Vibrations: 21,600 vibrations per hour
  • Power Reserve: Approx. 41 hours
  • Jewels: 24
  • Functions: Stop second hand function, day/date display
  • Case Material: Stainless steel (Bezel: Stainless steel with ceramic display)
  • Bezel: Black ceramic uni-directional rotating elapsed timing bezel
  • Diameter: 45.0 mm
  • Thickness: 13.22 mm
  • Lug-to-Lug: 47.7 mm
  • Dial Color: Blue (dark gradient, stamped wave pattern)
  • Crystal: Sapphire crystal with magnifier
  • Crystal Coating: Anti-reflective coating on inner surface
  • LumiBrite: LumiBrite on hands, index(es) and bezel
  • Band: Deep blue silicone strap
  • Distance Between Lugs: 22 mm
  • Water Resistance: 200m / 660ft diver's
  • Weight: 128.0 g
  • Features: SPECIAL EDITION on the case back, unidirectional rotating bezel, screw-down crown, screw case back

Timepiece History

Seiko's story began in 1881, when a 21-year-old entrepreneur, Kintaro Hattori, opened a shop selling and repairing watches and clocks in central Tokyo. The first watch to carry the Seiko name followed in 1924, and Seiko went on to introduce a long line of watchmaking firsts, including the Quartz Astron, the world's first quartz wristwatch, on December 25, 1969. In 2024, Seiko celebrated the 100th anniversary of the Seiko brand.

The SRPF77 belongs to the Prospex Sea line, a diver's watch lineage that traces back to 1965, when Seiko introduced Japan's first diver's watch, a self-winding model water resistant to 150 meters that was used on the 8th Japanese Antarctic Research Expedition in 1966. In 1975, Seiko's Professional Diver's 600M became the world's first diver's watch with a titanium case, and Seiko has continued to engineer its divers around the demands of real underwater conditions. The SRPF77 carries that heritage into a Save the Ocean Special Edition that Seiko presents as its "Manta Ray" diver.

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