Seiko Prospex SRP789K1 "Coke Turtle" Automatic Diver 200m – Made in Japan

The **Seiko Prospex SRP789K1**, affectionately known by collectors as the **"Coke Turtle,"** is one of the most desirable members of Seiko's legendary Turtle family. Its bold black dial is complemented by the iconic black and red ("Coke") unidirectional dive bezel, creating a timeless tool-watch aesthetic that has become a favorite among Seiko enthusiasts. ([Seiko Watch Corporation][1])

Powered by Seiko's proven in-house **Caliber 4R36**, the SRP789K1 features automatic winding, hand-winding capability, hacking seconds, and approximately **41 hours of power reserve**. Designed to meet the demands of serious divers, it offers a screw-down crown, robust stainless steel construction, LumiBrite hands and markers, and **200 meters of professional diver's water resistance**. ([Seiko Watch Corporation][1])

Its comfortable 45mm Turtle case wears smaller than its dimensions suggest, making it equally suited for everyday wear or underwater adventures. As this model has been discontinued, it has become increasingly collectible among Seiko fans. ([Seiko Watch Corporation][1])

### Specifications

* **Reference:** SRP789K1
* Nickname: **"Coke Turtle"**
* **Made in Japan**
* Seiko Caliber 4R36 Automatic Movement
* 24 Jewels
* Hand-Winding & Hacking Seconds
* Approx. 41-Hour Power Reserve
* Black Dial
* Black & Red ("Coke") Unidirectional Dive Bezel
* Day & Date Display
* Stainless Steel Case & Bracelet
* Hardlex Crystal
* Screw-Down Crown
* Screw Case Back
* LumiBrite Hands & Hour Markers
* 200m / 660ft Professional Diver's Water Resistance
* Case Diameter: 45.0 mm
* Thickness: 13.4 mm
* Lug Width: 22 mm ([Seiko Watch Corporation][1])

### Included

* Original Seiko presentation box
* Original Seiko warranty card (where applicable)
* Instruction manual
* Original tags (if available)
* Lifetime Authenticity Guarantee

Each watch is thoroughly inspected before shipment and securely packaged. Purchase with confidence from a professional U.S. watch dealer specializing in authentic Japanese and Swiss timepieces.

[1]: https://www.seikowatches.com/ph-en/products/prospex/srp789?utm_source=chatgpt.com "SRP789 | Seiko Watch Corporation"