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A.I. Reviews v37.5 (refreshed with Grok 4.1 Fast)
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Model Name:
Seiko PROSPEX Diver Steel SRPD23
Watch added to favourite list
Reference:
SRPD23
Price ($)
$
394
Country:
Japan
A.I. Rating
7.1
Crowd Rating:
896
Watch Description
This is a new Seiko automatic dive watch that is nicknamed the Great White Shark Samurai. This Seiko SRPD23 Samurai model is part of the new Save the Ocean collection. Part of the proceeds from the sale of this collection will be donated to the non-profit Fabien Cousteau Ocean Learning Center that raises awareness of ways to preserve and protect the planets waters and endangered marine life. It has a distinctive graduated blue dial with a texture that resembles the surface of water. This is offset with blue bezel that has a grey hue that defines the first 15 minutes. The bezel insert also has some fine grooves (hard to see in images) that give this Samurai watch a unique and very distinctive look.
It features a Seiko 23 jewel automatic (4R35) movement, a date display, highly luminous hands and markers treated with Lumibrite for awesome low light visibility, a screw down offset crown, a uni-directional diving bezel with luminous PIP at 12:00, Hardlex mineral crystal and a solid etched, screw-down case back. The 4R35 Seiko movement is self-winding and it can be hand wound and hacked. The movement has a 41 hour power reserve.
43.8
48.4
22
13.4
200
Steel - 316L
Round
Acrylic
Screw-in
Automatic
4R35
41
Blue
A.I. Watch Review:
# Seiko PROSPEX Diver Steel SRPD23 Review by A.I. WatchMetrics
## Watch Summary
The Seiko PROSPEX Diver Steel SRPD23 is a robust tool watch in the iconic "Turtle" cushion case style, crafted from stainless steel with a matching bracelet, powered by the in-house automatic 4R36 movement delivering a 41-hour power reserve, day-date complications, and 21,600 vph beat rate, aimed at adventure-seeking enthusiasts who value reliable 200m water resistance, Lumibrite lume, and a unidirectional rotating bezel for professional diving at an everyday luxury price.
## Overall Watch Rating: 7.1/10.0
**Dials & Design Metric (8.6/10.0)** - Exemplary legibility, bold lume application, and timeless turtle proportions make it stand out like higher-end Omega Seamaster divers.
**History & Innovation Metric (8.5/10.0)** - Seiko's trailblazing dive watch heritage from the 1960s onward provides exceptional historical depth comparable to Rolex Submariner roots.
**Material Metric (8.3/10.0)** - Premium stainless steel case and bracelet with brushed polishing deliver luxury-level durability akin to Tudor's Black Bay.
**Versatility Metric (8.0/10.0)** - Seamlessly transitions from underwater adventures to casual wear, though less suited for formal occasions than a Datejust.
**Movement Metric (7.5/10.0)** - Dependable 4R36 automatic with hacking and hand-winding matches the reliability of a Sellita SW200 in mid-tier watches.
**Functions Metric (7.5/10.0)** - Solid lineup of timekeeping, day-date, and dive bezel functionality meets practical needs like many Citizen Promasters.
**Complications Metric (6.5/10.0)** - Practical day-date setup adds everyday utility on par with entry-level TAG Heuer formulas.
**Brand Metric (5.4/10.0)** - Seiko's mid-tier stature emphasizes accessible quality and volume production, similar to Hamilton's workhorse reputation.
**Rarity Metric (3.2/10.0)** - High production volume and moderate pricing result in common availability, unlike scarce microbrand limited runs.
## Total Performance Score (TPS): 4.2
## WM Collector Grade: B-
## Performance Insights: Excels in design, materials, history, and versatility while offering strong movement and functions; rarity lags, delivering strong value versus its $450 implied price equivalent of $275.
## TPS Interpretation: Fair Value: The watch overperforms expectations in aesthetics and build quality relative to its accessible price point.
## Watch Data
[https://seikowatches.com/us-en/-/media/seiko/prospex/srpd23k1/srpd23k1_front.jpg?h=800&w=800&la=en] - Front image; [https://seikowatches.com/us-en/-/media/seiko/prospex/srpd23k1/srpd23k1_back.jpg?h=800&w=800&la=en] - Back image; [-] - No specific lume image; [Prospex Turtle SRPD23] - Nickname; [Seiko] - Brand; [PROSPEX Diver Steel SRPD23] - Model; [Japan] - Country; [https://www.seikowatches.com/us-en/products/prospex/srpd23k1] - Product Link; [-] - reviewLink; [Automatic] - Movement Type; [4R36] - Movement Name; [2] - # Secondary; [Iconic stainless steel Prospex "Turtle" diver with automatic day-date movement and 200m water resistance] - watchDescription; [43.8] - caseWidth; [48.5] - lugToLugLength; [13.4] - thickness; [22] - lug; [200] - waterResist; [41] - powerReserve; [21600] - beatFrequency; [Lumibrite] - lume; [24] - jewels; [Stainless Steel] - caseMaterial; [Hardlex] - watchGlass; [Unidirectional rotating aluminum] - Bezel; [Transparent screw-down] - caseback; [Screw-down] - Crown; [Stainless steel bracelet] - Strap; [Cushion] - Shape; [Black luminous indices and markers] - Dial; [Yes] - Seconds; [Yes] - Date; [No] - Calendar; [No] - Chiming; [No] - Chronograph; [No] - Compass; [Yes] - dateCompilation; [No] - DigitalDisplay; [No] - Dress; [No] - Field; [No] - GMT; [No] - Mechanical Alarm; [No] - Moonphase; [No] - Tourbillon; [No] - worldTimer; [No] - powerReserveIndicator; [Yes] - Diver; [No] - Pilot; [No] - racing; [No] - Skeleton; [No] - Vintage; [No] - StyleFormal; [Yes] - StyleCasual; [Yes] - StyleSports; [No] - StyleTravel; [Yes] - StyleAdventure; [Yes] - StyleCollector; [Yes] - StyleTool; [No] - StyleStatement; [No] - StyleVintage; [No] - StyleSmart; [No] - StyleCustom; [4.2] - TPS_new; [B-] - TPSgrade; [275] - TPSimpliedPrice;
**A.I. WatchMetrics Review v37.4 Grok 4 Fast. December 19, 2025.**
