Rated for 1000 meters / 3300 ft, the SN0147-G is San Martin’s flagship dive instrument. Its 316 L steel case is built to withstand immense underwater pressure, while a manual helium escape valve ensures safe decompression during saturation dives.
At the heart lies the Seiko NH35 — a 24-jewel, self-winding automatic movement favored for accuracy and serviceability. With hacking, hand-winding, and a 41-hour reserve, it’s reliable both on land and beneath the surface.
A wave-pattern enamel dial reflects the ocean’s motion, while BGW9 X1 lume illuminates the hands, indices, and bezel pip in an ice-blue glow. The 120-click unidirectional bezel provides tactile dive-timing precision, and the sapphire crystal’s AR coating offers distortion-free clarity even in direct light.
| Feature | Details |
|---|---|
| Brand | San Martin |
| Model | SN0147-G |
| Movement | Seiko NH35 Automatic (Hacking & Hand-winding) |
| Case Diameter | 43 mm |
| Lug-to-Lug | 48.5 mm |
| Case Thickness | 15.9 mm |
| Case Material | 316 L Stainless Steel – Full Brushed Finish |
| Dial | Blue Gradient Enamel Wave Texture + 3D Indices |
| Crystal | Sapphire Glass with AR Coating |
| Bezel | 120-Click Unidirectional – Bead-Blasted Steel Insert |
| Lume | BGW9-X1 (Blue Light) – Hands, Indices, Bezel Pip |
| Water Resistance | 100 ATM / 1000 m / 3300 ft |
| Crown | Screw-down with 3D Hexagon Logo |
| Case Back | Screw-down 3D Shark Logo |
| Helium Valve | Yes – Manual Escape Valve |
| Bracelet | 316 L Solid Steel, Chamfered Edges |
| Clasp | “On-the-Fly” Adjustable Folding Clasp with Safety Lock |
| Weight | Approx. 227 g |
| Warranty | 2 Years |
1000 m ISO-Rated Waterproofing – Professional diver certification.
Helium Escape Valve – Prevents pressure damage under saturation conditions.
NH35 Automatic Engine – Reliable Japanese movement with 41 h reserve.
BGW9-X1 Lume – Long-lasting ice-blue glow in low light.
Sapphire + AR Coating – Superior scratch and glare protection.
Adjustable Clasp Design – Instant micro-fit without tools.
1 × San Martin SN0147-G Watch
Presentation Box
Instruction Manual
2-Year Warranty Card
Is the SN0147-G suitable for professional diving?
Yes. It’s ISO-rated for 1000 m, featuring a functional helium escape valve for saturation dives.
What movement does it use?
The Seiko NH35, renowned for its reliability, hacking seconds, and hand-winding capability.
Is it too heavy for daily wear?
At 227 g, it feels substantial but balanced — ideal for those who prefer solid, tool-grade watches.
Can I swap bracelets?
Yes, it fits 22 mm straps — San Martin offers rubber and NATO options sold separately.
How bright is the lume?
It uses BGW9-X1, a premium compound that glows ice blue for hours after exposure to light.
Is servicing simple?
Yes — any qualified watchmaker familiar with Seiko movements can service the NH35.
★★★★★ – Adam C.
“Incredible build for the price. The wave dial looks alive under sunlight, and the bracelet adjustment is genius.”
★★★★★ – Lewis M.
“Dove to 30 meters last week — flawless. The lume is superb and the helium valve adds authenticity.”
★★★★☆ – Evan T.
“Chunky but comfortable. Bezel action is tight and precise. Would buy again.”
★★★★★ – Jared F.
“A serious tool watch that rivals models 3x its price. San Martin nailed the details.”
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1. What should I do if there is water inside the watch?
If there is only a small amount of water vapor inside the watch, it will usually disappear over time. You can also wear the watch upside down on your wrist for about two hours; the vapor should then dissipate.
If you notice visible water droplets inside the watch, please have it repaired as soon as possible to prevent internal damage.
2. Special Note:
Fully automatic mechanical watches rely on the motion of your wrist for automatic winding. Therefore, it’s recommended to wear the watch for at least 8 hours a day to maintain accurate timekeeping.
Some automatic watches also allow manual winding to supplement power. To manually wind your watch, ensure that the crown is not pulled out and turn it clockwise about 15 times.
For watches that are not designed for manual winding, do not attempt to wind them manually, as this can cause damage.
3. Warning:
Between 8:00 p.m. and 4:00 a.m., do not adjust the calendar, weekday, or month functions. Doing so may result in calibration errors or even damage to the movement.
Keep mechanical watches away from televisions, computers, and other devices with magnetic fields, as magnets can affect their accuracy and function.
1. Delivery Time
DHL / UPS / EMS: 4–15 days
Premium Shipping: 15–20 days
Standard Shipping: 24–44 days
Kindly Note:
Delivery times may be delayed due to customs inspections, weather conditions, or peak seasons (such as Christmas). Please be patient and allow extra time for your order to arrive.
2. Customs Duty or Import Tax
The listed prices do not include taxes or import duties. Buyers are responsible for any customs duties or import taxes applicable in their country.
We offer a full refund if the item you receive differs from the product description.
A refund will be issued once we receive the returned goods and confirm they are in good condition. Please contact us before sending any items back.
Shipping costs paid by the sender are non-refundable, and return shipping fees must be covered by the buyer.
Thank you for your understanding and cooperation.
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.
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.
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.
| 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 |
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.
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.
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.
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.
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.
A first-class watch. I am very convinced and will buy again. Everyone is happy here. Fast shipping to Germany.
Everything is fine, great watch
Great watch. It's a shame for the trouble they caused me at customs. A lot of help from the seller and everything was facilitated. Thank you very much.
A great watch
Massively impressed by this beautifully proportioned timepiece. Well done San martin, such excellent value for money. Loving the dial, the hands, the case, the strap. In fact, everything and it all works so well together ❤️ . I've got a 7.25" wrist and it just sits there perfectly, size-wise and presence. All of the angles on the case and strap make it feel borderline like there's a transformer sitting there and yet so comfortable. New favorite, highly commended
A***
What a beautiful beast of a watch. I just love everything about it! Looks and feels perfect on my wrist. Thank you
WOW! Love it!