Product Description
San Martin SN0004-GA Vintage Diver Watch — NH35A, 38mm, Sapphire, 200m
The San Martin SN0004-GA is an upgraded vintage diver watch built around the genuine Seiko NH35A automatic movement, in compact 38mm vintage proportions. 316L solid stainless steel case with sapphire AR-coated crystal, 120-click ceramic bezel, and a solid steel bracelet with fly-adjustable clasp. 200m water resistance with screw-down crown and case back. Available in matte black, blue, or green dial finishes, with a choice of hand styles and luminous colours.
Key Specifications
| Specification | Details |
|---|---|
| Brand | San Martin |
| Model | SN0004-GA |
| Movement | Seiko NH35A automatic |
| Jewels | 24 |
| Power reserve | 41+ hours |
| Case material | 316L solid stainless steel, brushed finish |
| Case diameter | 38mm |
| Lug to lug | 46mm |
| Case thickness | 13mm |
| Crystal | Sapphire with AR coating |
| Bezel | 120-click unidirectional, ceramic insert, luminous pip at 12 |
| Dial options | Matte black, blue, green |
| Hand options | Classic, pencil, or DLC gold |
| Lume | SLN C3 (green) or BGW-9 (blue) |
| Bracelet | Solid 316L stainless steel, female end links, fly-adjustable clasp |
| Crown | Screw-down |
| Case back | Screw-down |
| Water resistance | 200m (20ATM) |
| Weight | ~146g |
| Warranty | 2-year San Martin international warranty |
Vintage Proportions, Modern Specification
At 38mm diameter with a 46mm lug-to-lug measurement, the SN0004-GA sits closer to classic 1960s-70s dive watch sizing than the 40-42mm norm common across most contemporary dive watches. This makes it a strong option for smaller to average wrists, or for buyers who specifically want the proportions of a vintage dive watch without the compromises that often come with genuinely old watches — namely modern water resistance, a reliable serviced movement, and consistent quality control.
Seiko NH35A Automatic Movement
The NH35A is a well-documented, widely respected Japanese automatic movement — 24 jewels, with a power reserve of 41 or more hours from full wind. It includes hacking (the seconds hand stops when the crown is pulled for precise time setting) and manual winding capability via the crown, alongside its primary automatic self-winding function through wrist motion. This is one of the most proven, serviceable movements in the affordable automatic watch segment, with worldwide parts and service availability.
Sapphire Crystal with AR Coating
Genuine sapphire crystal — Mohs 9 hardness, highly scratch-resistant — with an anti-reflective coating applied to improve dial visibility and reduce glare under direct light.
120-Click Ceramic Bezel
The unidirectional rotating bezel uses a ceramic insert with 120 click positions, providing precise elapsed-time tracking for dive timing or general interval use. Ceramic bezels resist scratching and fading better than aluminium inserts over long-term wear. A luminous pip at the 12 o’clock position remains visible in low light for quick bezel orientation.
Dial, Hands, and Lume Options
Dial finishes: matte black, blue, or green, with printed or applied indices depending on the specific configuration.
Hand styles: classic, pencil, or DLC gold — all carrying luminous coating.
Lume colour: choice of SLN C3 (green) or BGW-9 (blue), both providing strong brightness and duration in dark conditions, with a retro-toned glow consistent with the watch’s vintage design language.
Solid Stainless Steel Bracelet
The bracelet is solid 316L stainless steel with female end links for a close, well-integrated fit against the case, and a fly-adjustable clasp — allowing on-the-fly length adjustment without tools, useful for accommodating wrist size changes throughout the day.
200m Water Resistance
Rated 200m (20ATM) via a screw-down crown and case back — suitable for swimming, snorkelling, and recreational diving. Always ensure the crown is fully screwed down before water exposure, and avoid operating the crown underwater.
Weight and Wear
At approximately 146g, the SN0004-GA has a solid, substantial feel on the wrist without tipping into heavy or cumbersome territory — a balance that suits both daily wear and more active use.
Warranty
Every SN0004-GA is backed by San Martin’s 2-year international warranty.
FAQ
Is this watch suitable for diving? Yes — with 200m (20ATM) water resistance via screw-down crown and case back, the SN0004-GA is suitable for swimming, snorkelling, and recreational diving.
What movement does it use? The Seiko NH35A automatic movement — 24 jewels, hacking, manual winding, and a power reserve of 41 or more hours.
What lume options are available? A choice between SLN C3 (green) or BGW-9 (blue) luminous coating, both offering strong brightness in low-light and dark conditions.
Does it come with a warranty? Yes — every SN0004-GA includes a 2-year San Martin international warranty.
What size wrist does this suit? At 38mm diameter and 46mm lug-to-lug, this watch suits smaller to average wrists particularly well, following classic vintage dive watch proportions.
Is the crystal genuine sapphire? Yes — sapphire crystal with anti-reflective coating, Mohs 9 hardness.
Last updated: 2026
Matte Black Dial & Pencil Hands, Retro C3 Green Luminous
Brand: San Martin
Model: SN0004-GA New Upgraded Version
Movement: NH35A[Automatic mechanical movement]
Case: Material – 316L Stainless Steel
38mm in diameter
Lug to Lug 46mm
Thickness 13mm
Band width 20 mm
Glass: Sapphire Glass,AR Coating
Bezel: Upgraded 120 Clicks Unidirectional Chronograph Bezel,Ceramic Top Ring, 12 O’clock Luminous Markers
Dial Color: Matte Black, With Printed Time Scale; Black/Blue/Green Dial, With Applied Indices, Printed Hexagon Logo
Hands: DLC Gold Hands/Classic Hands/Pencil Hands, Luminous Coating
Luminous: Retro Luminous Effect SLN C3 Green Light/ BGW-9 Blue Light, Hands and Markers
Crown: Screw-down Crown, With 3D Hexagonal Logo
Case Back: Screw-down Case Back, Brushed Process
Strap: 316L Solid Stainless Steel Bracelet, With Female end links Bracelet,
Clasp: New Fly Adjustable Clasp, Folding Clasp With Safety, With San Martin Hexagon Logo
Water Resistant: 20Bar=200 meters
Weight: about 146g
Warranty: 2 Year
Black/Blue/Green & Classic Hands, BGW-9 Blue Luminou
Black/Blue/Green & Pencil Hands, BGW-9 Blue Luminou
New Upgrade Bezel, Sapphire Crystal Glass, AR Coating, Female Endlinks
Case HD Details Display
120 Clicks Unidirectional Chronograph Bezel,Ceramic Top Ring
Matte Black Retro Dial, Cursive Logo, DLC Gold Hands, Printed Indices, Luminous Coating
Black/Blue/Green Dial, Applied Indices, Printed Hexagon Logo
Screw-down Crown, V1 Black/ V2 Black, With 3D Hexagonal Logo
Screw-down Case Back, Brushed Process
316L Solid Stainless Steel Bracelet, With San Martin Hexagon Logo
New Fly Adjustable Clasp
Shipping & Delivery
SHIPPING
We are proud to offer international shipping services that currently operate in over 200 countries and islands world wide. Nothing means more to us than bringing our customers great value and service. We will continue to grow to meet the needs of all our customers, delivering a service beyond all expectation anywhere in the world.
Do you ship worldwide?
Yes. We provide free shipping to over 200 countries around the world. However, there are some locations we are unable to ship to. If you happen to be located in one of those countries we will contact you.
What about customs?
We are not responsible for any custom fees once the items have been shipped. By purchasing our products, you consent that one or more packages may be shipped to you and may get custom fees when they arrive to your country.
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 |
Do you provide tracking information?
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.
My tracking says “no information available at the moment”.
For some shipping companies, it takes 2-5 business days for the tracking information to update on the system. If your order was placed more than 5 business days ago and there is still no information on your tracking number, please contact us.
Will my items be sent in one package?
For logistical reasons, items in the same purchase will sometimes be sent in separate packages, even if you've specified combined shipping.
If you have any other questions, please contact us and we will do our best to help you out.
RETURNS
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 1-3 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.
Refunds & Returns
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.
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Great watch from San Martin. Very happy with the purchase!
The watch is very beautiful, I like the little hands.
Excellent
This is a very handsome and attractive watch that punches way above its price. Highly recommended!
Very good watch. Love the fauxtina and vintage style.
Superb watch with a vintage look (james bond 1960s style). Really great size and color. Almost unbeatable value for money. Fast delivery and very pleasant contact with the seller.
Really love this new watch! It was delivered on time with excellent packaging to protect the watch! I highly recommend buying this - i am super happy with the purchase!! !
epic hours
Excellent watch and great finishing
Very satisfied with the watch. The movement YN55a runs accurate (-5sec/d) and even better than the seiko movements I owned previously. The finish is on a high level and I can't say anything negative about this watch. Highly recommend. Personaly I hope that San Martin is doing a Royal Oak hommage in the future.