Seiko King Turtle Model SRPE05 Overview
The Seiko King Turtle Model SRPE05, part of the renowned Prospex Automatic Diver collection, is a timepiece built for the adventurer. Its design reflects the brand’s commitment to technological excellence and standout aesthetics, and it rises to meet any challenge that comes its way.
The King Turtle boasts an upgraded iconic style, featuring a ceramic bezel and a sapphire crystal, the latter having an anti-reflective coating on the inner surface for clear readability. The watch is hardy, yet aesthetically pleasing, with a three-dimensional pressed pattern on its khaki green dial that mirrors the shape of the bezel edge.
Enhancing its functionality, the watch uses LumiBrite hands and markers, which ensures visibility in dim conditions, and a magnified day/date window for easy reference. Powering the timepiece is a 24-jewel automatic movement, which beats at a frequency of 21,600 vibrations per hour and offers a power reserve of approximately 41 hours. This movement can be wound both manually or automatically, as per user preference.

Crafted from stainless steel, the King Turtle model comes with a black ceramic one-way rotating elapsed timing bezel, a secure screwdown crown and caseback, and a durable khaki green silicone strap. Its robustness does not compromise its elegance, combining practicality with style.
The King Turtle watch is not just a timepiece but also a reliable companion for scuba divers, meeting ISO standards for diving and offering water resistance up to 200 meters. This makes it an ideal accessory for underwater exploration and other high-intensity activities.
In summary, the Seiko King Turtle Model SRPE05 is a versatile and durable timepiece, marrying the worlds of adventure and sophistication, built to cater to those who embrace life as an ultimate adventure.

How Is A Seiko King Turtle Different From A Regular Seiko Turtle?
The Seiko Turtle and King Turtle are both popular models in Seiko’s Prospex line, particularly known for their diver’s watches. While they share similarities in design and functionality, they have key differences as well.
The term “Turtle” originated from the Seiko community due to the cushion shape of the watch case, which resembles a turtle shell. The “King Turtle” builds upon the traditional Turtle model, enhancing its features and design.
- Bezel and Crystal: The first notable difference between the King Turtle and the regular Turtle is the bezel and the crystal. The King Turtle typically has a ceramic bezel, known for its toughness and resistance to scratches, compared to the regular Turtle’s stainless steel bezel. Additionally, the King Turtle model features a sapphire crystal, which is more scratch-resistant and durable than the Hardlex crystal used in the regular Turtle models. You will notice in my picture I removed the cyclops, I hate them!
- Dial Design: The King Turtle often features a more intricate dial design, such as a waffle or wave pattern, compared to the relatively simpler design of the regular Turtle.
- Strap Options: The King Turtle models often come with a silicone strap, considered more premium and comfortable than the rubber or stainless steel strap that usually accompanies the regular Turtle models.
- Cyclops Feature: The King Turtle introduces a magnified day/date window, also known as a ‘Cyclops’ feature, which is not present in the regular Turtle models.
Overall, the King Turtle can be viewed as an upgrade over the regular Turtle, featuring enhancements in design and materials that offer improved durability, aesthetic appeal, and comfort.

Some of the most popular Seiko Turtle models include:
- SRP777: This is the standard black Turtle model with a rubber strap.
- SRP779: This model features a ‘Pepsi’ (blue and red) bezel and a rubber strap.
- SRP773: A model with a blue dial and bezel, it comes with a metal bracelet.
- SRP775: This one has a black and gold bezel and dial with a metal bracelet.
- SRPD21: Known as the ‘Save the Ocean’ Turtle, this model features a unique blue dial.
- SRPE99: A US special edition with a blue dial and bezel, and a metal bracelet.
- SRPC44: This model, often called the ‘Gold Turtle’, features gold accents.
- SRPC91: Also known as the ‘Save The Ocean’ Special Edition, this model features a blue dial and ‘Pepsi’ bezel.
Check Out These Popular Seiko Turtles On Amazon:
- WATER-RESISTANT: these water-resistant men’s dive watches are ISO scuba-approved to depths of 200 meters
- AUTOMATIC: these self-winding, automatic men’s watches are powered by your movement, with a power reserve of 41 hours
- STAINLESS STEEL: features a durable stainless steel watch case and coordinating silicone watch band
- LUMIBRITE DISPLAY: this men’s automatic watch features a highly-legible display with LumiBrite hands and markers
- 4R36 CALIBER: equipped with the reliable caliber 4R36 automatic movement, this accurate men’s watch keeps precise time
- Prospex Automatic Diver
- Caliber 4R36
- Silicone Band
- Lumi Brite Hands
- Sapphire Crystal
- WATER-RESISTANT: these water-resistant men’s dive watches are ISO scuba-approved to depths of 200 meters
- AUTOMATIC: these self-winding, automatic men’s watches are powered by your movement, with a power reserve of 41 hours
- LUMIBRITE DISPLAY: this men’s dive watch features a highly-legible display with LumiBrite hands and markers
- STAINLESS STEEL: this diving watch for men features a stainless steel watch case and bracelet, a uni-directional rotating elapsed timing bezel, and a bold blue dial evoking signature PADI colors
- 4R36 CALIBER: equipped with the reliable caliber 4R36 automatic movement, this accurate men’s watch keeps precise time
- WATER-RESISTANT: these water-resistant men’s dive watches are ISO scuba-approved to depths of 200 meters
- AUTOMATIC: these self-winding, automatic men’s watches are powered by your movement, with a power reserve of 41 hours
- STAINLESS STEEL: features a durable stainless steel watch case and bracelet with a blue ceramic uni-directional elapsed timing bezel
- SPECIAL EDITION: this men’s watch features an intricately patterned blue dial inspired by turtle shells, promoting ocean exploration and conservation
- 4R36 CALIBER: equipped with the reliable caliber 4R36 automatic movement, this accurate men’s watch keeps precise time
- 41 hour power reserve once fully charged, one way rotating elapsed time bezel, magnified day/date calendar, screwdown crown & caseback
- Size / Weight: Case size (H x W x D): 1.9 x 1.8 x 0.5 inches (47.7 x 45.0 x 13.2 mm); Belt: Width approx. 0.8 – 0.9 inches (20 – 22 mm); Arm length (longest): 8.1 oz (22 g)
- Material: Case: Stainless steel; Band: Silicone; Wind: Sapphire crystal with lens
- Waterproof Performance: Water resistant to 666.6 ft (200 m) (Caliber No) 4R36 automatic movement (with hand winding and second hand stop function)
- Although the calendar is basically indicated in bilingual display (English & Spanish), there are (English, Arabic, English & French) and other items in random, so you cannot specify a language. Please contact us before purchase and we will answer the stock language
- Accessories: Japanese instruction manual (duplicated), foreign language instruction booklet, and a cosmetic box (SEIKO cosmetic box is included, but the design will differ from each time it is in stock. If a Japanese model has a dedicated box setting, it may not be a dedicated box. )
- WATER-RESISTANT: these water-resistant men’s dive watches are ISO scuba-approved to depths of 200 meters
- AUTOMATIC: these self-winding, automatic men’s watches are powered by your movement, with a power reserve of 41 hours
- STAINLESS STEEL: features a durable stainless steel watch case and bracelet
- LUMIBRITE DISPLAY: this men’s automatic watch features a highly-legible display with LumiBrite hands and markers
- 4R36 CALIBER: equipped with the reliable caliber 4R36 automatic movement, this accurate men’s watch keeps precise time
- Case Diameter: 41.7mm
- Case Thickness: 12.3mm
- Case Length: 49.5mm
- Lug Width: 20mm

Blair Witkowski is an avid watch nut, loves pocket knives and flashlights, and when he is not trying to be a good dad to his nine kids, you will find him running or posting pics on Instagram. Besides writing articles for Tech Writer EDC he is also the founder of Lowcountry Style & Living. In addition to writing, he is focused on improving his client’s websites for his other passion, Search Engine Optimization. His wife Jennifer and he live in coastal South Carolina.