Seiko Samurai Save the Ocean (SRPF79): A Deep Sea Manta Ray Experience

Step into a world of aquatic wonder with the Seiko Samurai Save the Ocean 2021 edition. Seamlessly blending style and purpose, this remarkable timepiece not only boasts impressive features but also supports the noble cause of marine conservation. In this comprehensive review of the Seiko Samurai Save the Ocean SRPF79, we will take a closer look at its features and design. So without further ado, let’s get started!

Seiko Samurai Save the Ocean Watch
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Case Dimensions and Design: 

Crafted with precision, the Seiko Samurai Save the Ocean features a robust stainless steel case with a diameter of 43.8 millimeters. Despite its seemingly large size, the lug-to-lug measurement of only 48.7 millimeters ensures a comfortable fit even on smaller wrists.

Seiko Samurai Save the Ocean Crown View
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Seiko Samurai Save the Ocean Side View
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The case, exuding elegance, and strength, showcases a combination of brushed and polished finishes, accentuating its sharp angles. The crown, knurled for enhanced grip, exhibits an upward taper, leaving the bottom of the crown slightly exposed but comfortably positioned against the wrist. 

The Dial: 

Immerse yourself in the deep sea allure of the Seiko Samurai’s dial. The base exhibits a mesmerizing deep sea blue, gradually darkening towards the three and nine o’clock positions. The dial’s captivating wave-like texture perfectly mimics the mysterious depths of the ocean.

Seiko Samurai Save the Ocean Dial
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Gracefully adorning the dial are three enchanting manta rays, each positioned uniquely to create an intriguing visual display. The applied indices, enhanced with Seiko’s luminous material called LumiBrite, ensure exceptional legibility even in low-light conditions. The polished sword hands and the arrow-tipped second hand complement the dial’s aesthetic while offering optimal readability.

The Strap: 

Providing maximum comfort, the Seiko Samurai comes equipped with a supple silicon strap. The strap tapers from 22 millimeters to 20 millimeters at the buckle, exhibiting a sleek and balanced design. Its smooth top surface showcases the iconic tsunami logo, while the underside features a diamond pattern that promotes breathability. The meticulously designed clasp, featuring a brushed top and polished sides, ensures secure and stylish wear.

Water Resistance: 

Seiko’s commitment to providing reliable diving timepieces is evident in the Seiko Samurai Save the Ocean. With its ISO 6425 certification, this watch offers an impressive water resistance of 200 meters, making it suitable for both professional diving and everyday water activities. Additionally, it adheres to ISO 1413 shock resistance and ISO 764 antimagnetic certifications, guaranteeing exceptional durability and resilience.

Movement and Performance: 

At the heart of the Seiko Samurai Save the Ocean beats the robust 4R35B movement, renowned for its reliability and accuracy. This 23-jewel automatic movement operates at 21,600 beats per hour (3 Hz) and boasts a power reserve that ensures consistent timekeeping. 

Although the movement’s rated accuracy ranges from +45 to -35 seconds per day, our hands-on experience revealed a commendable average deviation of only -10 seconds per day. The 4R35B movement, also known as NH35, has gained popularity in various microbrands, solidifying its status as a dependable workhorse. The case back, bearing the iconic tsunami logo, pays homage to Seiko’s rich heritage.

Seiko Samurai Save the Ocean Back
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Areas for Improvement: 

While the Seiko Samurai Save the Ocean excels in numerous aspects, it is essential to acknowledge the presence of some quality control issues. Customers have reported concerns with the crown and the bezel. Seiko should strive to address these matters to further enhance the overall user experience.


One of the most appealing aspects of the Seiko Samurai Save the Ocean Dark Manta is its affordability. Priced at an impressive $595 USD, this watch offers exceptional value for money. With features such as sapphire crystal and ceramic bezel inserts, which are highly regarded by watch enthusiasts, the Seiko Samurai Save the Ocean Dark Manta meets the expectations of discerning buyers. Seiko’s commitment to producing watches with premium materials at accessible price points is commendable.

Note: The price of the watch may vary based on the retailer and the country of purchase.

Final Thoughts: 

The Seiko Samurai Save the Ocean Dark Manta is a true embodiment of Seiko’s commitment to ocean conservation. This watch not only stands as a remarkable timekeeping instrument but also contributes to the Fabian Cousteau Ocean Learning Center.

With its captivating dial, sturdy construction, and reliable movement, it is a timepiece that can accompany you on all your aquatic adventures. Although some quality control issues persist, the Seiko Samurai Save the Ocean remains a compelling choice for watch enthusiasts who value both style and sustainability. 

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