The San Martin SN0126 is a 38mm Miyota 90S5 automatic dive watch at 11.7mm total case thickness — a 200m-rated ceramic bezel diver in one of the thinnest and most compact case profiles available at this specification level. Three-dimensional wave texture dial in four colour configurations, 120-click unidirectional ceramic bezel, sapphire crystal with AR coating, BGW9 blue lume, GS Crafts broad sword hands, solid steel bracelet with fly-adjust clasp.
| Specification | Detail |
|---|---|
| Model | SN0126 |
| Case diameter | 38mm |
| Lug to lug | 46.5mm |
| Case thickness | 11.7mm |
| Lug width | 20mm |
| Case material | 316L stainless steel, brushed and polished chamfers |
| Crystal | Sapphire, AR coated |
| Bezel | 120-click unidirectional, ceramic insert |
| Movement | Miyota 90S5 automatic (Japan) |
| Jewels | 24 |
| Beat rate | 28,800 vph |
| Power reserve | ~42 hours |
| Hacking | Yes |
| Hand-winding | Yes |
| Hands | GS Crafts broad sword, luminous |
| Lume | BGW9 blue — hands and markers |
| Crown | Screw-down, engraved hexagon logo |
| Caseback | Screw-down |
| Bracelet | Solid 316L stainless steel |
| Clasp | Fly-adjust, on-the-fly |
| Water resistance | 200m (20 ATM) |
| Weight | ~145g |
| Warranty | 2 years |
Blue-black wave: A deep blue gradient wave dial with black accents — the most widely appealing combination. The blue wave texture shifts from deep navy at the outer edge toward lighter blue-black toward the centre.
Green-black wave: A deep green wave dial with black accents. Green ceramic bezel divers are specifically collected — the wave texture adds depth to the green gradient.
Light blue-blue wave: A lighter, brighter blue with deeper blue accents — a more vibrant, contemporary reading of the wave pattern compared to the deep navy blue-black variant.
Black wave: A matte or dark black wave dial — the highest contrast and most assertive configuration. The wave texture is visible as a subtle three-dimensional pattern against the dark field.
The Miyota 90S5 is the high-specification tier of the Miyota 9000 series — distinct from the standard 9015 used in the SN0148 and SN0150. The 90S5 runs at 28,800 vph with hacking and hand-winding, 24 jewels, ~42-hour power reserve. It is used in the Carnival IW 527 Moon Phase and is one of the more capable Miyota calibers available in the affordable automatic range.
At 28,800 vph the seconds sweep is smooth — 8 ticks per second rather than the 6 of standard 21,600 vph movements like the NH35. For buyers comparing sweep quality between movements, the 90S5 and 9015 are equivalent in this regard; both run at 28,800 vph.
The 90S5’s ultra-thin architecture is what enables the 11.7mm total case height — a full-specification 200m ceramic bezel diver at this profile thickness requires a movement that does not add height to the case.
For context within the San Martin range reviewed at Jewelry Addicts:
| Model | Diameter | Thickness | Water Resistance | Movement |
|---|---|---|---|---|
| SN0126 | 38mm | 11.7mm | 200m | Miyota 90S5 |
| SN0148 | 37.5/40mm | 11.4mm | 200m | Miyota 9015 |
| SN0017 | 40mm | 11.6–12.7mm | 200m | PT5000/NH35 |
| SN0118 | 40mm | 12.4mm | 200m | NH35 |
| SN007-G V4 | 41mm | 14mm | 200m | NH35A |
The SN0126 at 11.7mm / 38mm occupies the compact end of the range. Only the SN0148 is thinner (11.4mm) in the 200m category. For buyers who want 200m capability in the smallest and slimmest available format, the SN0126 and SN0148 are the correct choices — differing by dial type (wave vs spiral vortex) and movement (90S5 vs 9015).
The wave texture dial uses a three-dimensional sculpted surface — raised and recessed elements forming a wave pattern across the dial face. Unlike the SN0129’s desert/sand dune texture (irregular organic ripple pattern) or the SN0148’s spiral vortex (radial rotating pattern), the SN0126’s wave pattern is a directional, flowing wave form.
The gradient colour treatment deepens the texture’s visual character — the colour transitions from darker at the outer dial edge toward lighter at the centre, with the wave pattern creating consistent directional flow across the gradient. The applied polished indices and GS Crafts broad sword hands sit above the textured surface, maintaining legibility over the complex dial background.
The GS Crafts designation refers to San Martin’s Grand Seiko-inspired hand finishing — flat polished facets on the hand surfaces creating a mirror-bright hand body with defined angular profiles. The broad sword hand shape maximises the lume surface area on the hour and minute hands while presenting a clean, wide profile on the dial face. Under direct light the polished facets create bright reflections; the lume fill provides the BGW9 blue glow in low light.
At 38mm with 46.5mm lug-to-lug the SN0126 suits wrists from approximately 15.5cm upward. Below 17cm the 38mm case fits proportionally without overhang; at 17–18.5cm the watch wears as a compact diver; above 18.5cm buyers who prefer larger proportions may find 38mm visually modest.
The 11.7mm case height means the watch does not protrude significantly from the wrist — it sits closer to flat than most 200m divers, which enables wearing under jacket cuffs and in formal contexts alongside dive-capable use.
The SN0126 is built for:
vs. San Martin SN0148 — The SN0148 is 37.5mm or 40mm at 11.4mm with Miyota 9015 and spiral vortex dial. The SN0126 is 38mm at 11.7mm with Miyota 90S5 and wave dial. Both are ultra-slim 200m Miyota divers — 0.3mm thickness difference, different dial textures. Choose by dial pattern preference.
vs. San Martin SN0017 — The SN0017 is 40mm at 200m with PT5000 or NH35 and enamel or sunray dial. The SN0126 is 38mm with 90S5 and wave texture dial — 2mm smaller case, similar thickness range.
vs. Hruodland F029 — The F029 is 36mm at 200m with NH38 at a lower price. The SN0126 is 38mm at 200m with Miyota 90S5 and ceramic bezel at higher specification. Both are compact 200m divers for smaller wrists.


Japan Miyota 90S5, MIYOTA’s Signature Ultra-thin Premium Mechanical Movement.
28,800 vibrations per hour
Stop second device
24 jewels
42 hours of energy storage
Function:
Stop second device
Automatic and hand winding
3 Hands

Luminous Effect: BGW-X1 Blue Light,Hands and Markers


Brand: San Martin
Model: SN0126-GS
Movement: Miyota 90S5 [Automatic Mechanical Movement]
28,800 vibrations per hour
Stop second device
24 jewels
42 hours of energy storage
Function:
Stop second device
Automatic and hand winding
3 Hands
Case: Material – 316L Stainless Steel
Case Diameter: 38mm
Lug to Lug: 46.5mm
Thickness: 11.7mm
Band Length: 180mm/7.09in
Band width: 20mm x 16mm
Glass:Sapphire Glass, AR Coating
Bezel: 120 Clicks Unidirectional Chronograph Bezel, Ceramic Bezel Insert
Dial Color: Enamel 3D Wave Texture Dial,
Gradient Green-Black/ Gradient Light Blue-Blue/Gradient Blue-Black/ Black, Printed Hexagon Logo
Hands: GS Crafts Broad Sword Hands, Luminous Coating
Luminous: BGW-X1 Blue Light, Hands and Markers
Crown: Screw-down Crown, With 3D Hexagon Logo
Case Back: Screw-down Case Back, Brushed Process
Strap: 316L Solid Stainless Steel Full Brushed Process Bracelet, Comfortable Polishing Chamfer Design, Width 20mm * 16 mm
Clasp: New Upgrade On The Fly (OTF) Adjustable Clasp,With San Martin Hexagon Logo
Water Resistant: 200Bar=200meters
Weight: about 145g
Warranty: 2 Year
Enamel Gradient Light Blue-Blue Wave Texture Dial



Enamel Gradient Green-Black Wave Texture Dial



Enamel Gradient Blue-Black Wave Texture Dial



Enamel Black Wave Texture Dial



Sapphire Crystal Glass, AR Coating

HD Case Details: Ingenious Combination of Brushed and Polished Processes



Enamel Gradient Wave Texture Dial, Printed Hexagon Logo & Applied indices, GS Crafts Broad Sword Hands, Luminous Coating
120 Clicks Unidirectional Chronograph Bezel, Ceramic Bezel Insert





Screw-down Crown, With 3D Hexagon Logo, More sealed and waterproof

Screw-down Case Back, Brushed Process

Upgrade New Bracelet & Clasp, 316L Solid Stainless Steel Bracelet, Width 20mm * 16 mm


New Upgrade On The Fly (OTF) Adjustable Clasp,With San Martin Hexagon Logo

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If for any reason you would like to exchange your product, perhaps for a different size in clothing, you must contact us first and we will guide you through the steps.
Please do not send your purchase back to us unless we authorise you to do so.
All orders can be cancelled until they are shipped. If your order has been paid and you need to make a change or cancel an order, you must contact us within 12 hours. Once the packaging and shipping process has started, it can no longer be cancelled.
Your satisfaction is our #1 priority. Therefore, you can request a refund or reshipment for ordered products if:
We do not issue the refund if:
*You can submit refund requests within 15 days after the guaranteed period for delivery (45 days) has expired. You can do it by sending a message on Contact Us page
If you are approved for a refund, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 14 days.
If for any reason you would like to exchange your product, perhaps for a different size in clothing. You must contact us first and we will guide you through the steps.
Please do not send your purchase back to us unless we authorise you to do so.
This watch is beautiful. decently sized and so accurate. i am impressed.
Super nice watch from san martin. Absolutely first class finishing and workmanship. Bracelet is fantastic - i believe this has the "upgraded" sm bracelet. Dial is really great, really pops. Overall, very satisfied.
Great watch, nicely finished.
Beautiful watch great size very well-made
Awsome watch love the dial and the pattern awsome bracelet really good watch over all very impressed