San Martin · Factory brand · China

San Martin SN0135 39mm

Ref. SN0135-G · In production · GMT

Design reference: Tudor Black Bay Pro

San Martin SN0135-G GMT watches with white and black enamel dials and engraved steel 24-hour bezels on mesh bracelets
Photo: San Martin
From $398
  • Seiko NH34A
  • 39 mm × 12.75 mm
  • Sapphire crystal
  • 100 m water resistance

Movement

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 mm
Lug to lug
48.5 mm
Thickness
12.75 mm
Lug width
20 mm
Material
Steel (316L)
Hardening
—
Water resistance
100 m
Crown
Screw-down
Case back
—
Bezel
24-hour GMT, steel insert

Crystal & dial

Crystal
Sapphire
Shape
—
Anti-reflective
Yes (side not stated)
Lume
BGW-X1 blue, on hands and markers

Bracelet & clasp

Style
Mesh
Links per row
—
Solid end links
—
Solid links
—
Link attachment
—
Taper
20 → 18 mm
Quick release
—
Half links
—
Clasp
—
Micro-adjust
—
Diver extension
—

Weight

Head only
—
On bracelet
—
On strap
—

Prices

VariantConfigurationTypePriceUSDAs ofSource
Enamel White—Street398 USD$3982026-10-24link
Enamel Black—Street398 USD$3982026-10-24link

Variants

NameReferenceDial
Enamel WhiteSN0135-Gwhite enamel
Enamel BlackSN0135-Gblack enamel

About this entry

68% of key specs known. Missing: weight, hardening, bracelet links, end links, link attachment, clasp micro-adjust.

Brand specs: 316L, 39mm, 48.5mm lug-to-lug, 12.75mm (not stated whether that includes the crystal), 20mm lugs, sapphire with AR coating (side not stated), black or white enamel dial, date at 3, pencil hands, BGW-X1 blue lume on hands and markers, screw-down crown, screw-down caseback, 100m, solid 316L mesh bracelet 20mm tapering to 18mm with an "Extension folding Clasp" with 3D hexagon logo (construction and adjustment not described). Weight not stated. The steel bezel with an engraved 24-hour scale, the snowflake hour hand and the orange GMT hand are from the photos; whether the bezel rotates is not stated. inspired_by is read from the design (steel 24-hour bezel, snowflake hour hand, 39mm GMT); the brand does not name it. The listing's URL slug is spelled "ssn0135-g". Price $398 on 2026-10-24; the listing was in stock on 2026-10-25.

Last verified: 2026-10-25. Edit or correct this entry.

Sources