Product Description
San Martin SN0054-GF GMT Automatic Watch
The SN0054-GF refines San Martin’s vintage-inspired GMT design into a compact 38.3mm case while upgrading the watch with a smooth 4Hz mechanical movement and a more practical bracelet adjustment system.
Its fixed stainless steel 24-hour bezel works with the central GMT hand to display a second time zone, making the watch equally useful for travel, international work or simply keeping track of another part of the world.
High-Beat Hangzhou 6460 Movement
At the heart of the SN0054-GF is the Hangzhou 6460 automatic mechanical movement.
Operating at 28,800 vibrations per hour (4Hz), the movement provides a smoother seconds-hand sweep than the 3Hz movements commonly found in many affordable automatic GMT watches.
It also features hacking seconds, a central GMT hand, date display and approximately 40 hours of power reserve.
Compact 38.3mm GMT Case
Rather than following the oversized proportions often associated with sports GMT watches, San Martin uses a 38.3mm case with a 47.8mm lug-to-lug measurement.
The result is a more restrained vintage-inspired profile that can transition easily between casual, travel and everyday wear.
The case and bracelet are constructed from 316L stainless steel, with a mix of brushed surfaces and polished accents providing definition without making the watch overly flashy.
Top-Hat Sapphire Crystal
A raised top-hat sapphire crystal with anti-reflective coating reinforces the retro character of the design while providing strong scratch resistance and a clear view of the dial.
The slightly elevated crystal works particularly well with the fixed brushed 24-hour bezel, giving the SN0054-GF a distinctly vintage tool-watch silhouette.
GMT Second-Time-Zone Display
The additional central GMT hand works against the numbered 24-hour bezel to display another time zone alongside the conventional hour, minute and seconds hands.
This allows the SN0054-GF to provide genuine everyday travel utility without overcrowding the dial with additional sub-dials or complications.
Eight Dial Variations
The range includes:
Red
Dark Blue
Gilt Black
Black
White
Light Blue
Light Green
Brown
The darker Red, Dark Blue, Gilt Black and Black versions use applied logos and indices, giving them a more dimensional appearance.
White, Light Blue, Light Green and Brown versions use printed logos and indices, creating a flatter, cleaner dial presentation.
BGW-X1 Blue Lume
The hands and hour markers use BGW-X1 blue luminous material for strong low-light visibility.
The large snowflake-style hands and generously sized hour markers make the display easy to distinguish quickly, while the contrasting GMT hand remains identifiable from the primary time display.
On-the-Fly Adjustable Clasp
One of the most useful changes on this upgraded version is San Martin’s on-the-fly adjustable clasp.
It allows bracelet fit to be fine-tuned without removing links or relying exclusively on fixed micro-adjustment holes, making it easier to compensate for wrist expansion throughout the day.
The bracelet also uses female end links to help it articulate naturally around the wrist.
100m Water Resistance
A screw-down crown and screw-down case back contribute to a 100-meter water-resistance rating, giving the SN0054-GF the versatility expected from an everyday sports watch.
Always make sure the crown is fully screwed down before exposing the watch to water.
Specifications
| Specification | Details |
|---|---|
| Brand | San Martin |
| Model | SN0054-GF |
| Movement | Hangzhou 6460 |
| Movement Type | Automatic mechanical GMT |
| Frequency | 28,800 vph / 4Hz |
| Jewels | 25 |
| Power Reserve | Approx. 40 hours |
| Hacking Seconds | Yes |
| Functions | Hours, minutes, seconds, GMT, date |
| Case Material | 316L stainless steel |
| Case Diameter | 38.3mm |
| Bezel Diameter | 39mm |
| Lug to Lug | 47.8mm |
| Thickness | 12.4mm |
| Crystal | Top-hat sapphire crystal |
| Crystal Coating | Anti-reflective coating |
| Bezel | Fixed 316L stainless steel 24-hour bezel |
| Crown | Screw-down |
| Case Back | Screw-down, brushed finish |
| Lume | BGW-X1 blue |
| Bracelet | 316L solid stainless steel |
| End Links | Female |
| Bracelet Width | 20mm tapering to 16mm |
| Bracelet Length | Approx. 190mm |
| Clasp | On-the-fly adjustable clasp |
| Water Resistance | 100m / 10 bar |
| Weight | Approx. 148g |
| Warranty | 2 years |
Which Dial Should You Choose?
For a traditional vintage GMT appearance, Black, Gilt Black or Dark Blue are the strongest choices.
The Red dial creates the boldest contrast against the brushed steel case, while Light Blue and Light Green give the watch a much lighter contemporary character.
White provides the highest dial contrast, while Brown offers a warmer, understated alternative to the usual black or blue GMT.
FAQ
What movement is in the San Martin SN0054-GF?
The SN0054-GF uses the Hangzhou 6460 automatic mechanical GMT movement. It operates at 28,800 vibrations per hour and provides approximately 40 hours of power reserve.
Is the SN0054-GF a GMT watch?
Yes. It includes a central fourth hand that reads against the fixed 24-hour bezel to display a second time zone.
The supplied specifications do not state that the local hour hand can be independently adjusted, so I would not advertise this as a “true GMT” or “traveler GMT.”
How large is the SN0054-GF?
It has a compact 38.3mm case with a 47.8mm lug-to-lug measurement and 12.4mm thickness.
Does it have sapphire crystal?
Yes. It uses a top-hat sapphire crystal with an anti-reflective coating.
What is an on-the-fly clasp?
The OTF clasp lets you make small bracelet-fit adjustments without removing bracelet links, which is useful when wrist size changes slightly during the day.
Is the watch water resistant?
Yes. It is rated to 100 meters / 10 bar and uses a screw-down crown and case back. The crown should always be fully secured before water exposure.
Does the watch have lume?
Yes. The hands and markers use BGW-X1 blue lume.
Internal Linking
Near the end of the description, I would add this customer-facing paragraph:
Looking for another GMT or automatic watch? Explore the complete San Martin Watches collection, discover more Men’s Watches, or compare the brand’s standout models in our Best San Martin Watches 2026 guide.
Hangzhou 6460 Movement
Centre GMT hand
3 hands / date
28,800 vibrations per hour (4Hz)
Stop second device
25 jewels
40 hours of energy storage
Luminous Effect: BGW-X1 Blue Light, Hands and Markers
Brand: San Martin
Model: SN0054-GF
Movement: Hangzhou 6460 [Automatic mechanical movement]
Centre GMT hand
3 hands / date
28,800 vibrations per hour (4Hz)
Stop second device
25 jewels
40 hours of energy storage
Case: Material – 316L Solid Stainless Steel
Case Diameter: 38.3mm
Bezel: 39mm
Lug to Lug: 47.8mm
Thickness: 12.4mm
Band Length: 190mm/7.5in
Band width: 20mm x 16mm
Glass: Top Hat Sapphire Crystal Glass, AR Coating
Bezel: 316L Stainless Steel Bezel
Dial Color: Matte Dial, Gilt Black, Black, Red. Dark Blue, White, Light Blue, Light Green, Brown, Applied/Printed Indices,
Date Window at 3 o’clock
Hands: GS Crafts Snowflake Hands/GMT 4 Hands
Luminous: BGW-X1 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, Size 20mm *16mm
Clasp: New On The Fly (OTF) Adjustable Clasp,With San Martin Hexagon Logo
Water Resistant: 10Bar=100 meters
Weight: 148g
Warranty: 2 Year
Matte Dial, Gilt Black, Black, Red. Dark Blue
Applied Logo and Indices
Matte Dial, White, Light Blue, Light Green, Brown
Printed Logo and Indices
Top Hat Sapphire Crystal Glass, AR Coating,With Female end links
Case HD Details Display
Dial HD Details Display, Applied Indices, Date Windows
Screw-down Crown,With San Martin Hexagon Logo
Screw-down Case Back, Sunray Brushed Process
316L Solid Stainless Steel Bracelet, Size 20mm *16mm
New On The Fly (OTF) Adjustable Clasp,With San Martin Hexagon Logo
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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