San Martin · Factory brand · China

San Martin SN012 40mm (Seagull ST2130)

Ref. SN0012-GB · In production · Diver

San Martin SN0012-GB with black dial and black ceramic bezel on five-link bracelet
Photo: San Martin
  • San Martin SN0012-GB with fully lumed white dial, with a lume shot inset
  • San Martin SN0012-GB with orange dial, with a lume shot inset
From $338 to $358
  • Seagull ST2130
  • 40 mm × 12.3 mm
  • Sapphire crystal
  • 200 m water resistance

Movement

Type
Automatic
Tier
Mid
Complications
Hours, Minutes, Seconds
Frequency
28,800 bph
Power reserve
—
Hacking
Yes
Accuracy (factory)
—

Case

Diameter
40 mm
Lug to lug
48.5 mm
Thickness
12.3 mm
Lug width
20 mm
Material
Steel (316L)
Hardening
—
Water resistance
200 m
Crown
Screw-down
Case back
Solid
Bezel
ceramic insert, lumed

Crystal & dial

Crystal
Sapphire
Shape
—
Anti-reflective
Yes (side not stated)
Lume
Differs by dial (the white dial is fully lumed)

Bracelet & clasp

Style
Jubilee
Links per row
5
Solid end links
—
Solid links
Yes
Link attachment
—
Taper
—
Quick release
—
Half links
—
Clasp
Fold-over
Micro-adjust
—
Diver extension
—

Weight

Head only
—
On bracelet
—
On strap
—
Stated weight (basis not given)
163 g

Prices

VariantConfigurationTypePriceUSDAs ofSource
Black dial—Street338 USD$3382026-10-24link
White lume dial—Street358 USD$3582026-10-24link
Orange dial—Street358 USD$3582026-10-24link

Variants

NameReferenceDial
Black dialSN0012-GBblack
White lume dialSN0012-GBwhite
Orange dialSN0012-GBorange

About this entry

79% of key specs known. Missing: hardening, end links, link attachment, clasp micro-adjust.

The "new version" SN012, listed as SN0012-GB (store category SN012) with a Seagull ST2130. The older SN012-G (sn012-8215 and sn012-8315, Miyota) is quoted at 51mm lug-to-lug and 12.5mm, so its case is not the same. Brand specs: 316L, 40mm, 48.5mm lug-to-lug, 12.3mm including crystal, 20mm lugs, ceramic bezel insert with lume (direction and clicks not stated), sapphire with AR coating (side not stated), black, white or orange dial, broadsword hands, lume that "differs on different dials" (the white dial is fully lumed and glows green in the brand's lume photo), screw-down crown, solid caseback, solid five-bead (jubilee-style) steel bracelet about 180mm long, solid folding clasp "with microadjustments" (type not stated), 200m, about 163g (not stated what was weighed). Black is $338, white and orange $358; all were in stock on 2026-10-24. Photos show no date window, so complications are time only.

Last verified: 2026-10-24. Edit or correct this entry.

Sources