San Martin · Factory brand · China
San Martin SN0109 GMT
- Seiko NH34A
- 39.8 mm × 13 mm
- Sapphire crystal
- 100 m water resistance
Where to buy
- San Martin (SN0109-G Pepsi)Worldwide
- San Martin (SN0109-G-2)Worldwide
- San Martin (SN0109-G-3)Worldwide
- San Martin (SN0109-G4)Worldwide
- San Martin AliExpress store (SN0109-G-3)
Movement
- Caliber
- Seiko NH34A
- Type
- Automatic
- Tier
- Entry
- Complications
- Date, GMT
- Frequency
- 21,600 bph
- Power reserve
- 41 h
- Hacking
- Yes
- Accuracy (factory)
- -20 / +40 s/day
Case
- Diameter
- 39.8 mm
- Lug to lug
- 48.5 mm
- Thickness
- 13 mm
- Lug width
- 20 mm
- Material
- Steel (316L)
- Hardening
- —
- Water resistance
- 100 m
- Crown
- Screw-down
- Case back
- —
- Bezel
- Bidirectional, 24-hour GMT, aluminum insert
Crystal & dial
- Crystal
- Sapphire
- Shape
- Box
- Anti-reflective
- Yes (side not stated)
- Lume
- BGW9 (C3 on SN0109-G-3)
Bracelet & clasp
- Style
- —
- Links per row
- —
- Solid end links
- —
- Solid links
- Yes
- Link attachment
- —
- Taper
- 20 → 16 mm
- Quick release
- —
- Half links
- —
- Clasp
- Fold-over
- Micro-adjust
- On-the-fly, "Fly Adjustable Clasp (BK1642)"
- Diver extension
- —
Weight
- Head only
- —
- On bracelet
- —
- On strap
- —
- Stated weight (basis not given)
- 148 g
Prices
| Variant | Configuration | Type | Price | USD | As of | Source |
|---|---|---|---|---|---|---|
| All | — | Street | 309 USD | $309 | 2026-10-20 | link |
Variants
| Name | Reference | Dial | Bezel |
|---|---|---|---|
| SN0109-G Pepsi | SN0109-G | black or white | blue and red aluminum |
| SN0109-G-2 | SN0109-G-2 | black or white | blue/black, black, or black/green aluminum |
| SN0109-G-3 | SN0109-G-3 | black | black aluminum |
| SN0109-G4 | SN0109-G4 | black | brown or black/brown aluminum |
About this entry
79% of key specs known. Missing: hardening, bracelet links, end links, link attachment.
"BB GMT" in the brand's own titles; snowflake hour hand and 39mm case. Brand specs (all four listings): 316L case 39mm with a 39.8mm bezel (the larger figure is recorded), 48.5mm lug-to-lug, 13mm thick (12.85mm on the G-2 and G-3 listings), 20mm lugs, "top hat" sapphire with AR coating (side not stated), aluminum 24-hour bezel insert (the G-3 listing says bidirectional; clicks not stated), screw-down crown and caseback, 100m, 148g (not stated what was weighed). Lume is BGW9 blue on the G, G-2 and G4 and C3 green on the G-3. Bracelet is solid 316L, 20mm tapering to 16mm, with the BK1642 "Fly Adjustable" folding clasp with safety (on-the-fly; positions and range not stated). Bracelet style, end links and link attachment not stated. All four listings were $309 (crossed-out $459) and showed "Out of stock" on 2026-10-20, so production status is unknown. Retailer Watchdives sells an "SN0109G-A" with a Hangzhou HZ6460 GMT movement instead of the NH34 (12.25mm thick, $272 in Oct 2026); that movement version is not covered by this file.
Last verified: 2026-10-20. Edit or correct this entry.
Sources
- San Martin official store, SN0109-G GMT (Pepsi) accessed 2026-10-20
- San Martin official store, SN0109-G-2 accessed 2026-10-20
- San Martin official store, SN0109-G-3 accessed 2026-10-20
- San Martin official store, SN0109-G4 accessed 2026-10-20
- Slickdeals, San Martin SN0109G-A with HZ6460 movement at Watchdives (Oct 2026) accessed 2026-10-20