San Martin · Factory brand · China

San Martin SN020 39mm (Seagull ST2130)

Ref. SN020-G3 · Explorer

Design reference: Rolex Explorer

San Martin SN020-G3 39mm explorer with black dial on steel bracelet
Photo: San Martin
  • San Martin SN020-G3 39mm explorer with Tiffany blue dial, applied 3-6-9 numerals and Mercedes hands on steel bracelet
From $326
  • Seagull ST2130
  • 39 mm × 12.5 mm
  • Sapphire crystal
  • 100 m water resistance

Movement

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

Case

Diameter
39 mm
Lug to lug
47.5 mm
Thickness
12.5 mm
Lug width
20 mm
Material
Steel (316L)
Hardening
—
Water resistance
100 m
Crown
Screw-down
Case back
Solid, screw-down
Bezel
Fixed

Crystal & dial

Crystal
Sapphire
Shape
Box
Anti-reflective
Yes (side not stated)
Lume
BGW-9 blue on hands and markers

Bracelet & clasp

Style
Oyster
Links per row
3
Solid end links
—
Solid links
—
Link attachment
—
Taper
20 → 16 mm
Quick release
—
Half links
—
Clasp
Fold-over
Micro-adjust
Tool (pin holes), 4 positions
Diver extension
—

Weight

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

Prices

VariantConfigurationTypePriceUSDAs ofSource
Black dial—Street326 USD$3262026-10-24link
Tiffany blue dial—Street326 USD$3262026-10-24link

Variants

NameReferenceDial
Black dialSN020-G3black
Tiffany blue dialSN020-G3light blue

About this entry

84% of key specs known. Missing: hardening, end links, link attachment.

The SN020-G3 listing sells the 39mm SN020 with a Seagull ST2130 ($326) or a Sellita SW200 ($456), in black or Tiffany (light) blue; this file is the ST2130 version and sn020-sw200 the SW200 one. Each dial is sold with or without the San Martin logo at the same price. Brand specs: 316L, 39mm, 47.5mm lug-to-lug, 12.5mm (not stated whether that includes the crystal), 20mm lugs, "top hat" sapphire with AR coating (side not stated; top hat recorded as a box shape, as on the published SN0109), polished steel bezel (recorded as fixed with no insert), applied hour markers, "classic Mercedes" hands, BGW-9 blue lume on hands and markers, screw-down crown with 3D hexagon logo, brushed screw-down caseback, 316L bracelet with female end links, 20mm tapering to 16mm, folding clasp with safety and 4 micro-adjust holes (recorded as tool micro-adjust), 100m, about 138g (not stated what was weighed). The YN55A SN020-G2 (sn020-yn55a) has the same specs. Inspired_by is read from the design (3-6-9 dial, Mercedes hands, smooth bezel) and the listing titles, which call it an "explorer"; the brand does not name the Rolex. The movement has a date but the 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