Seiko Watch: Prospex Save The Ocean Tuna Srph77K1

Seiko Prospex Save the Ocean "Tuna" SRPH77K1 – A characterful diver's watch

The Seiko Prospex Save the Ocean "Tuna" SRPH77K1 is a solid and original diver's watch, designed for both sports and daily use. Part of the Seiko Prospex collection, this watch features an imposing 43.2 mm stainless steel case with a 13 mm thickness: an excellent balance of robustness, legibility, and wrist comfort, thanks to the very short lugs (only 48mm lug-to-lug for a 43.2mm diameter, which is very short).

Powered by a Seiko 4R35 movement, the Seiko Prospex Save the Ocean "Tuna" has a 41-hour power reserve. Its textured blue dial, engraved with a small swimming penguin, features indices and hands generously coated with LumiBrite, ensuring optimal readability in all conditions. Water-resistant to 200 meters, and equipped with a unidirectional bezel and a screw-down crown, this watch is perfectly suited for both diving and sporty urban use.

This Seiko Prospex Save the Ocean "Tuna" is in mint condition, rarely worn, and sold with box and papers.

Technical Specifications

• Brand: Seiko

• Model: Seiko Prospex Save the Ocean Tuna SRPH77K1

• Movement: Automatic Seiko 4R35, 41H power reserve, 24 jewels

• Case: 316L stainless steel, 43.2 mm, 13 mm thickness, 48mm lug-to-lug

• Crystal: Sapphire

• Dial: Textured blue, date between 4 and 5 o'clock

• Water Resistance: 200 m (20 ATM)

• Case back: Solid screw-down and engraved

• Strap: Rubber

• Pause Montres Warranty: 1 year

• Packaging: Box and papers, watch purchased in 2023

Why choose this watch?

The Seiko Prospex Save the Ocean "Tuna" is ideal for those seeking a true, comfortable diver's watch. Its movement ensures the reliability well-known to Japanese timepieces, with no demanding maintenance. Its short lugs make this 43mm watch wearable for most enthusiasts, while retaining the essential characteristics of a professional diver: 200m water resistance, unidirectional bezel, screw-down crown, and excellent legibility. It is a robust, practical, and versatile watch. A special edition full of character, for those looking for a gem to add to their collection.

About the Seiko brand

Founded in 1881, Seiko is one of the pillars of Japanese and global watchmaking. Renowned for constant innovation and an excellent price-to-quality ratio, the brand manages its entire production chain. The Prospex collection embodies Seiko's commitment to professional watches for diving, aviation, and exploration. Choosing a Seiko Prospex means opting for a reliable, proven watch designed to last.