The San Martin SN0116-G is a 39.5mm GMT automatic watch powered by the Seiko NH34 dedicated GMT caliber, featuring a 24-click bidirectional ceramic bezel with full luminous markers, top-hat sapphire crystal with AR coating, and full BGW9 Super-LumiNova on all hands and dial markers. Available in light blue dial and matte black dial, each on either a 7-link 316L stainless steel bracelet with San Martin’s fly adjustable clasp or a nylon strap configuration.
The SN0116 is San Martin’s original-design GMT platform — the case architecture, bezel layout and bracelet are San Martin’s own rather than derivative of any existing model. It sits at 39.5mm diameter with 12.5mm total thickness, making it one of the more compact full-specification NH34 GMT options on the market.
| Specification | Detail |
|---|---|
| Model | SN0116-G |
| Case diameter | 39.5mm |
| Lug to lug | 46.5mm |
| Thickness | 12.5mm |
| Lug width | 20mm |
| Case material | 316L stainless steel |
| Bezel | 24-click bidirectional, ceramic, full luminous markers |
| Crystal | Top-hat sapphire, AR coated |
| Movement | Seiko NH34 GMT automatic |
| GMT hand | Independent 24-hour — 4th hand |
| Dial | Light blue / Matte black, applied indices |
| Date | Yes — 6 o’clock |
| Luminous | Full BGW9 Super-LumiNova — hands and markers |
| Crown | Screw-down, San Martin hexagon logo |
| Caseback | Screw-down, brushed |
| Bracelet | 7-link 316L solid stainless steel, 20mm × 16mm |
| Clasp | Fly adjustable, 3D hexagon logo engraved |
| Also available | Nylon strap |
| Water resistance | 100m (10 bar) |
| Weight | ~136g |
| Warranty | 2 years |
Light blue dial / bracelet: A clean powder-blue sunray dial with applied silver indices and the BGW9 lume fill. The light blue is the more contemporary and distinctive of the two configurations — blue GMT watches are well-established in the collector market, and the SN0116’s specific powder-blue tone is lighter and more relaxed than the deep navy used on many competitors. On the 7-link steel bracelet with the polished and brushed surface combination this reads as a clean, versatile sport watch.
Light blue dial / nylon strap: The same light blue dial in a lighter configuration — nylon strap removes the 136g bracelet weight significantly and gives the watch a more casual, travel-ready character consistent with a GMT designed for frequent zone-crossing. The nylon is the more practical configuration for air travel.
Matte black dial / bracelet: A flat matte black surface with no sunray — the matte finish absorbs light rather than reflecting it, giving the dial a tactical, tool-watch character entirely different from the blue variant. The BGW9 markers stand out more starkly against the matte black than they would against a glossy surface. The most understated and versatile configuration across casual and professional contexts.
The NH34 is a dedicated GMT automatic movement manufactured by Seiko Instruments Inc. It is purpose-built for GMT function — not a standard movement with a module added — which keeps the case thickness at 12.5mm without the additional height that modular GMTs require.
Key functions:
Independent 24-hour GMT hand: the fourth hand completes one revolution per 24 hours, pointing to the 24-hour scale on the ceramic bezel (or the fixed inner chapter ring) to display the reference time zone continuously.
Hour-jump setting: pull the crown to position 1 (first click) and turn to advance the main hour hand in one-hour increments without stopping the running movement or disturbing the GMT hand. This is the travel use case — arriving in a new time zone, advance the main hour hand to local time while the GMT hand continues tracking home time.
Hacking: the seconds hand stops when the crown is pulled to position 2, allowing precise time synchronisation.
Hand-winding: via the crown in position 2.
Date at 6 o’clock: set via crown position 1 (counterclockwise to advance).
Accuracy is ±10–15 seconds per day under normal wear — standard for the NH34.
The SN0116’s bezel has three specifications worth noting:
24 clicks: standard dive and GMT bezels use 60 clicks (one per minute). A 24-click bezel has one click per hour on the 24-hour scale — each position represents exactly one hour of time zone offset. This is the correct configuration for a GMT travel bezel, where you want to count hour offsets rather than minutes. The 24-click mechanism makes time zone arithmetic directly mechanical: rotate three clicks = three hours offset.
Bidirectional rotation: the bezel rotates in both directions. A unidirectional bezel (dive watch standard) rotates only counterclockwise for safety reasons. A GMT travel bezel benefits from bidirectional rotation — you may need to add or subtract hours depending on whether your destination is east or west of your reference zone.
Full luminous markers: the 24-hour graduation and the 12 o’clock pip all carry BGW9 lume, matching the dial and hand lume formulation. Full bezel lume is unusual at this price level and means the bezel scale is readable in darkness alongside the dial — consistent GMT reference even in low-light conditions.
The “top-hat” profile — also called a box crystal — has a flat top surface with a raised, curved perimeter that creates a distinct shoulder between the flat centre and the bezel edge. This profile is visible from the side as a stepped silhouette and creates a distinctive shadow at the bezel-crystal junction when viewed from above. The AR coating on the inner surface reduces reflective glare while preserving the top-hat profile’s optical character.
BGW9 Super-LumiNova on every luminous element — hour markers, GMT hand, main hands and bezel graduation — is the specification that makes the SN0116-G genuinely functional in low light. BGW9 produces a bright blue-white glow in darkness, the most intense of the standard Super-LumiNova formulations.
The full lume specification (hands + markers + bezel) means every piece of time-zone information visible in daylight — local time, reference time on the bezel, GMT hand — is equally readable in complete darkness. This is the correct lume specification for a travel watch used across time zones in varied lighting conditions.
San Martin’s fly adjustable clasp allows micro-adjustment of the bracelet length without tools — a practical feature for a travel watch where the wearer may be in contexts (long flights, varied clothing layers) where wrist circumference changes slightly. The 3D hexagon logo engraving matches the signed crown. The 7-link 316L solid bracelet construction is one of San Martin’s strongest points — their bracelet quality consistently exceeds expectations at this price level.
The SN0116 model number covers multiple dial and colourway configurations across several Jewelry Addicts pages. Here is how the key variants differ:
Light blue / matte black (this page): the cleanest, most contemporary configurations. Light blue is distinctive and relaxed; matte black is versatile and tactical. Both use the same 24-click ceramic bidirectional bezel in matching tone. BGW9 throughout.
Rootbeer SN0116: brown dial with gold-tone case hardware and gold-and-brown bezel — the warm “rootbeer” colour scheme. Tonally cohesive and collector-focused. The most visually distinctive SN0116 configuration and the most discussed in GMT watch communities.
Avocado SN0116: deep olive-green dial — the avocado colourway is the outdoor and military-aesthetic option in the SN0116 range.
All three use the same case dimensions, NH34 movement and 100m water resistance. Choose by colour preference.
The SN0116-G is built for:
vs. Baltany S6074 Pepsi GMT — The Baltany S6074 uses NH34 with a rotating pepsi (blue/red) bezel and jubilee bracelet at 39mm. The SN0116 is the San Martin alternative with the 24-click GMT-specific bezel architecture and San Martin’s stronger bracelet construction. Both are strong options — compare bezel colour preference and bracelet finish directly.
vs. Baltany S6073 Retro GMT — The Baltany S6073 uses a fixed bezel with orange GMT hand and cream dial option. The SN0116 is the bidirectional bezel alternative for buyers who want the full rotating bezel GMT functionality.
vs. Seakoss GMT 1963 — The Seakoss GMT takes a vintage GMT direction. The SN0116 is the more contemporary sport GMT at comparable specification.
vs. San Martin SN0109 Rootbeer GMT — The SN0109 is San Martin’s other rootbeer GMT at 39mm. Compare case architecture and bezel configuration directly if you want the rootbeer colourway.
Exploring San Martin GMT watches and NH34 automatics:
San Martin New Original Design NH34 GMT SN0116-G
Bidirectional Bezel, New Fly Adjustable Clasp, Date Window at 6 o’clock



Full Luminous BGW-9 Blue Light, Hands and Markers


Brand: San Martin
Model: SN0116-G GMT
Movement: Japan NH34 [Automatic mechanical movement]
Centre GMT hand
3 hands / date
21,600 vibrations per hour (3Hz)
Stop second device
24 jewels
41 hours of energy storage
Case: Material – 316L Stainless Steel
Case Diameter: 39.5mm
Lug to Lug: 46.5mm
Thickness: 12.5mm
Band Length:
Bracelet: 195mm/7.7in
Nylon Strap: 260mm/10.2in
Band width: 20mm
Glass: Top Hat Sapphire Crystal Glass, AR Coating
Bezel: 24 Clicks Ceramic Bidirectional Bezel,Full Luminous Markers
Dial: Light Blue, Matte Black, Applied indices,Date Window at 6 o’clock
Hands: GMT 4 Hands, Luminous Coating
Luminous: Full Luminous BGW-9 Blue Light, Hands and Markers
Crown: Screw-down Crown, With San Martin Hexagon Logo
Case Back: Screw-down Case Back, Brushed Process
Strap: 7 Links 316L Solid Stainless Steel Bracelet, 20mm*16mm;
Fashion High Quality Colorful Nylon Strap, Spliced Leather Material, Sewed Process
Clasp: New Fly Adjustable Clasp, With 3D Hexagon Logo/316L Stainless Steel Buckle, With San Martin Logo
Water Resistant: 10Bar=100 meters
Weight: about 74g/136g
Warranty: 2 Year
Light Blue Dial




With Dark Blue-Light Blue Nylon Strap


Top Hat Sapphire Crystal Glass, AR Coating

24 Clicks Ceramic Bidirectional Bezel


Dial HD Details Display



Dial HD Details Display
Applied Indices, GMT 4 hands






Screw-down Crown,With San Martin Hexagon Logo

Screw-down Case Back, Brushed Process

7 Links 316L Solid Stainless Steel Bracelet, 20mm*16mm
New Fly Adjustable Clasp, With 3D Hexagon Logo


Fashion High Quality Colorful Nylon Strap, Spliced Leather Material, Sewed Process
316L Stainless Steel Buckle, With San Martin Logo




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| 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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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.
Very nice watch.
Received my SN0116 watch in pristine condition. The packaging was intact, and the items matched the description perfectly. The detailed and timely tracking information provided added to the overall positive shopping experience.
The product is as described in photos and video. Shipping was quick.
Very happy with the purchase
Amazing watch for the price.
Real time keeper!
A high-end and well-crafted product
In immaculate condition very happy with the watch as described lovely condition and my husband was very happy with it
Beautiful as always , I have many San Martin watches , I have never been disappointed
Really nice watch! Well made and stunning. Solid bracelet and easy to adjust, best value for the price It costs!
San Martin really delivered with a gorgeous watch. The crystal is great, the movement is spectacular, and the dial has turned heads and drawn compliments since the moment I put it on. The strap is a bit flimsy but the colors on it really pop and compliment the Tiffany-blue dial.
The clock is running exactly, looks really good, I'm completely satisfied. The band is very comfortable to wear and the customizable buckle is fabulous.
Totally dig this watch ..
Very lightweight and comfortable, love the on the fly adjustable clasp. Great function and finish for the price, would recommend
nice!
This watch came beautifully packaged and it is gorgeous. The band is well built and easy to adjust. I’ve seen the same watch sell for $70+ more and am very happy with my purchase.