San Martin · Factory brand · China

San Martin SN012 40mm (Miyota 8215)

Ref. SN012-G · Diver

From $238
  • Miyota 8215
  • 40 mm × 12.5 mm
  • Sapphire crystal
  • 200 m water resistance

Where to buy

Movement

Type
Automatic
Tier
Entry
Complications
Hours, Minutes, Seconds
Frequency
21,600 bph
Power reserve
42 h
Hacking
Yes
Accuracy (factory)
-20 / +40 s/day

Case

Diameter
40 mm
Lug to lug
51 mm
Thickness
12.5 mm
Lug width
20 mm
Material
Steel (316L)
Hardening
—
Water resistance
200 m
Crown
Screw-down
Case back
Solid
Bezel
—

Crystal & dial

Crystal
Sapphire
Shape
—
Anti-reflective
Yes (side not stated)
Lume
BGW9 (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)
165 g

Prices

VariantConfigurationTypePriceUSDAs ofSource
All—Street238 USD$2382026-10-24link

Variants

NameReferenceDial
Matte black dialSN012-Gblack
Luminous white dialSN012-Gwhite

About this entry

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

The SN012-G listing ("Model: SN0012-G") sells the same watch with a Miyota 8215 (40-hour power reserve) at $238 or a Miyota 8315 (60 hours) at $278; this file is the 8215 version and sn012-8315 the 8315 one. The newer SN0012-GB (sn012-st2130, Seagull ST2130) is quoted at 48.5mm lug-to-lug and 12.3mm, so its case is not the same. Brand specs: 316L, 40mm, 51mm lug-to-lug, 12.5mm including crystal, 20mm lugs, sapphire with AR coating (side not stated), matte black or fully luminous white dial, broadsword hands, BGW-9 lume, screw-down crown, solid caseback, solid five-bead (jubilee-style) steel bracelet, "solid turtle folding clasp" (no micro-adjust mentioned), 200m, about 165g (not stated what was weighed). Photos show a black bezel with a 15/30/45 scale; the listing doesn't describe the bezel. Each dial is sold with or without the logo at the same price. Photos show no date window, so complications are time only. Every variation showed "Out of stock" on 2026-10-24, so production status is unknown.

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

Sources