San Martin SN0148 Automatic Diver Watch — Miyota 9015, 37.5mm or 40mm, Vortex Dial, 200m
The San Martin SN0148 is a 200m automatic diver available in 37.5mm (SN0148-GX1) and 40mm (SN0148-G1) case sizes, powered by the Miyota 9015 at 11.4mm total case thickness — unusually slim for a 200m-rated ceramic bezel diver. The spiral vortex sunburst dial creates a radial pattern radiating outward from the dial centre in deep colour gradients across blue, red, green and grey. Five-link J bracelet with polished chamfers on the second and fourth links, fly-adjust clasp, sapphire crystal with AR coating and BGW9 blue lume.
Key Specifications
| Specification | 37.5mm (GX1) | 40mm (G1) |
|---|---|---|
| Case diameter | 37.5mm | 40mm |
| Lug to lug | 46mm | 49.5mm |
| Case thickness | 11.4mm | 11.4mm |
| Lug width | 20mm | 20mm |
| Case material | 316L stainless steel | 316L stainless steel |
| Crystal | Sapphire, AR coated | Sapphire, AR coated |
| Bezel | 120-click ceramic, unidirectional | Same |
| Movement | Miyota 9015 (28,800 vph) | Same |
| Jewels | 24 | 24 |
| Power reserve | ~42 hours | ~42 hours |
| Hacking | Yes | Yes |
| Hand-winding | Yes | Yes |
| Lume | BGW9 blue | BGW9 blue |
| Bracelet | 5-link J, 195mm | 5-link J, 195mm |
| Clasp | Fly-adjust, hexagon logo | Same |
| Water resistance | 200m (20 ATM) | 200m (20 ATM) |
| Weight | 138g | 149.7g |
| Warranty | 2 years | 2 years |
Variants — Dial Colours
Sunburst blue: The most broadly appealing — deep navy at the outer edge transitioning toward lighter blue at the dial centre. The vortex pattern creates directional spiralling within the blue gradient.
Sunburst red: A deep red-to-crimson gradient with the vortex texture — the most visually assertive configuration. The combination of red and the rotational vortex pattern creates a dial with strong kinetic character.
Sunburst green: Deep green gradient with vortex texture. Among the most collected colour choices across the current watch market — green on a capable ceramic bezel diver at this specification level is specifically sought.
Sunburst grey: A neutral grey gradient — the most formally versatile of the four. The vortex pattern is most subtly visible on grey, creating depth without chromatic assertiveness.
11.4mm at 200m — Why It Matters
Most 200m ceramic bezel automatic divers run between 13mm and 15mm case height. The SN0148’s 11.4mm profile is a genuine specification achievement — approximately 2mm slimmer than typical 200m-rated competitors at this price.
For context within the San Martin range: the SN0007-G V4 is 14mm at 200m; the SN0017 is 11.6–12.7mm depending on movement; the SN0118 gradient diver is 12.4mm. The SN0148 at 11.4mm is the slimmest 200m diver in the range.
The slim profile is enabled primarily by the Miyota 9015’s thin movement architecture. The 9015 is notably thinner than Seiko NH35 calibers, which is why it appears in the SN0150 MOP at 10.2mm total thickness and the SN0148 at 11.4mm — San Martin uses the 9015 specifically where profile thickness is a design priority.
At 11.4mm the SN0148 wears closer to a dress watch than a diver on the wrist — it clears shirt and jacket cuffs cleanly, sits flush to the wrist without the raised-case feel of thicker divers and is appropriate for business contexts alongside active use.
Spiral Vortex Dial
The spiral vortex texture is a radial pattern — fine spiral lines emanating outward from the dial centre, creating a rotational visual effect. The gradient colour treatment adds depth to the texture: the colour transitions from deeper at the outer edge toward lighter at the centre, following the direction of the vortex spiral. Under changing light the texture and gradient shift simultaneously.
A note on “enamel”: The SN0148 listing uses “enamel” as a descriptor for the dial finish. The FAQ in the original product description clarifies it is an “enamel-style textured spiral vortex finish” — a high-quality lacquer or coating treatment creating the textured appearance, not vitreous glass enamel fused at high temperature. True vitreous enamel is present on the SN0017 enamel dial variants. The SN0148 dial is a textured sunburst finish with excellent visual depth, accurately described as enamel-style or enamel-effect.
Five-Link J Bracelet with Polished Chamfers
The five-link J bracelet is a specific bracelet construction where alternating link rows carry different finishing. The second and fourth rows have polished chamfers — bevelled edges ground and polished to a mirror finish — while the first, third and fifth rows are brushed. The result is a bracelet with visual complexity: alternating mirror-bright and matte lines running along the bracelet length.
The J designation refers to the link profile shape. Combined with the polished chamfers, the bracelet is a step above standard three-link or flat-link constructions in perceived finishing quality. The fly-adjust clasp with San Martin hexagon logo provides micro-adjustment without link removal, tapering from 20mm at the lugs to 16mm at the clasp.
37.5mm vs 40mm — Which to Choose
The 37.5mm (GX1) suits wrists below approximately 16.5cm where a 40mm case creates proportional overhang. At 46mm lug-to-lug the 37.5mm is one of the most compact 200m ceramic bezel divers available at any price. At 138g it is also meaningfully lighter than the 40mm version at 149.7g.
The 40mm (G1) at 49.5mm lug-to-lug suits wrists from approximately 16cm upward. The visual presence of the vortex dial reads more fully at 40mm — the larger dial area displays the spiral texture and colour gradient more expansively.
Both versions share the same 11.4mm thickness, same movement, same bracelet construction and same 200m water resistance. The choice is purely proportional fit.
Who Is the San Martin SN0148 For?
The SN0148 is built for:
- Slim profile diver buyers who want 200m capability without the 13–14mm case height typical of ceramic bezel divers
- Miyota 9015 buyers who want the high-beat smooth sweep on a capable dive watch — the 9015 is unusual on a 200m diver in this price range
- 37.5mm small wrist buyers who want a 200m ceramic bezel diver that fits correctly — the 37.5mm / 46mm lug-to-lug is among the most compact 200m divers available
- Green or red vortex dial buyers who want distinctive colour expression on a capable specification
How It Compares
vs. San Martin SN0017 — The SN0017 is 40mm at 200m with PT5000 or NH35 at 11.6–12.7mm. The SN0148 is 37.5mm or 40mm at 200m with Miyota 9015 at 11.4mm and the spiral vortex dial. The SN0148 is the slimmer, more visually distinctive alternative.
vs. San Martin SN007-G V4 — The V4 is 41mm at 200m with NH35A at 14mm and C3 green lume. The SN0148 is slimmer at 11.4mm with Miyota 9015 and BGW9 blue lume. Choose V4 for maximum tool-watch presence and C3 lume; choose SN0148 for slim profile and vortex dial.
vs. Phylida SE-11 — The SE-11 is 41mm at 200m with Miyota 8215 at 14.1mm. The SN0148 is significantly slimmer at 11.4mm with the premium 9015 movement.
More from Jewelry Addicts
- San Martin Watches — Full Collection — all San Martin models
- San Martin SN0017 Classic Diver — 200m with PT5000 and enamel dial option
- San Martin SN007-G V4 — 41mm C3 lume diver
- San Martin SN0150 MOP — Miyota 9015 in dress-sport format
- Best Automatic Watches Under $500 — full roundup
Full Luminous Effect: BGW-X1 Blue Light
Japan Miyota 9015, 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
Quick date setting
3 Hands Date
Brand: San Martin
Model: SN0148-G1/X1
Movement: Miyota 9015 [Automatic mechanical movement]
Case Diameter: 37.5mm/40mm
Lug to Lug: 46mm/49.5mm
Thickness: 11.4mm
Band Length: 195mm/7.68in
Band width: 20mm x 16mm
Glass: Sapphire Crystal Glass, AR Coating
Bezel: 120 Clicks Unidirectional Rotating Bezel, Ceramic Bezel Insert
Dial Color: Enamel Gradient Sunburst Spiral Vortex Textured Dial, Sunburst Blue, Sunburst Red, Sunburst Green, Sunburst Gray, Applied Hexagon Logo & Applied Indices
Hands: Original GS Crafts, New Multi-cut Hands Set, 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: Solid 316L Stainless Steel 5 Links Bracelet ,20mm*16mm,
The new high-quality 5 Links J bracelet has polished chamfers on both sides. The second and fourth links have polished chamfers on both sides, More comfortable to wear
Clasp: New Upgrade Fly Adjustable Clasp/On The Fly Adjustable Clasp,With San Martin Hexagon Logo
Water Resistant: 20Bar=200 meters
Weight: about 138g/149.7g
Warranty: 2 Year
Enamel Gradient Sunburst Blue Spiral Vortex Textured Dial
Enamel Gradient Sunburst Red Spiral Vortex Textured Dial
Enamel Gradient Sunburst Gray Spiral Vortex Textured Dial
Enamel Gradient Sunburst Green Spiral Vortex Textured Dial
Sapphire Crystal Glass, AR Coating, Thickness 11.4mm, thinner overall, more suitable for daily wear
Case HD Details Display, The Transition Between Brushed And Polished Is Very Delicate
Ceramic Bezel Insert, Dial HD Details Display, Enamel Sunburst Spiral Vortex Textured Dial, Applied Hexagon Logo & Applied Indices
Original GS Crafts, New Multi-cut Hands Set, Luminous Coating, Date Window at 3 O’clock, Date Wheel Matching The Dial Color.
Screw-down Crown, With 3D Hexagon Logo, More sealed and waterproof
Screw-down Case Back, Brushed Process
Solid 316L Stainless Steel 5 Links Bracelet ,20mm*16mm.
The new high-quality 5 Links J bracelet has polished chamfers on both sides. The second and fourth links have polished chamfers on both sides, More comfortable to wear.
New Upgrade Fly Adjustable Clasp/On The Fly Adjustable Clasp,With San Martin Hexagon Logo
SHIPPING
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How long does shipping take?
Shipping time varies by location. These are our estimates:| Location | *Estimated Shipping Time |
|---|---|
| United States | 5-20 Business days |
| Canada, Europe | 5-20 Business days |
| Australia, New Zealand | 5-20 Business days |
| Central & South America | 5-25 Business days |
| Asia | 5-20 Business days |
| Africa | 5-25 Business days |
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Yes, you will receive an email once your order ships that contains your tracking information. If you haven’t received tracking info within 5 days, please contact us.
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For logistical reasons, items in the same purchase will sometimes be sent in separate packages, even if you've specified combined shipping.
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RETURNS
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We do not issue the refund if:
- Your order did not arrive due to factors within your control (i.e. providing the wrong shipping address)
- Your order did not arrive due to exceptional circumstances outside the control of jwlraddicts.com (i.e. not cleared by customs, delayed by a natural disaster).
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*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.
Exchanges
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.
Order cancellation
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.
Refunds
Your satisfaction is our #1 priority. Therefore, you can request a refund or reshipment for ordered products if:
- If you did not receive the product within the guaranteed time( 45 days not including 2-5 day processing) you can request a refund or a reshipment.
- If you received the wrong item you can request a refund or a reshipment.
- If you do not want the product you’ve received you may request a refund but you must return the item at your expense and the item must be unused.
We do not issue the refund if:
- Your order did not arrive due to factors within your control (i.e. providing the wrong shipping address)
- Your order did not arrive due to exceptional circumstances outside the control of jwlraddicts.com (i.e. not cleared by customs, delayed by a natural disaster).
- Other exceptional circumstances outside the control of //jwlraddicts.com
*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.
Exchanges
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.
Customer Reviews
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The finishing of the top watch is good and the clasp is very cool.
This thing really punches above its weight. looks stunning!
Its a beautiful watch, simply gorges.
It’s a really beautiful watch, 37.5mm is a right size.
Bright and unique color and texture, and the case and bracelet have fantastic finishing
This watch pinches way above its pay grade it is almost ludicrous. The dial, the bracelet, the microadjust, the wearability and comfort is all above and beyond what you are paying and puts the rest of the luxury watch market to shame! This watch is frankly perfect.