San Martin · Factory brand · China

San Martin SN020 39mm (NH35)

Ref. SN020-G · Explorer

Design reference: Rolex Explorer

From $258
  • Seiko NH35A
  • 39 mm × 12.5 mm
  • Sapphire crystal
  • 100 m water resistance

Where to buy

Movement

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

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
—

Crystal & dial

Crystal
Sapphire
Shape
—
Anti-reflective
Yes (side not stated)
Lume
Yellow-green "retro" lume

Bracelet & clasp

Style
Oyster
Links per row
3
Solid end links
—
Solid links
Yes
Link attachment
—
Taper
—
Quick release
—
Half links
—
Clasp
—
Micro-adjust
—
Diver extension
—

Weight

Head only
—
On bracelet
—
On strap
—

Prices

VariantConfigurationTypePriceUSDAs ofSource
Matte black dial—Street258 USD$2582026-10-24link

Variants

NameReferenceDial
Matte black dialSN020-Gblack

About this entry

74% of key specs known. Missing: weight, hardening, end links, link attachment, clasp micro-adjust.

The original SN020-G with an NH35, matte black dial with printed raised hour markers, with or without the San Martin logo at $258. Brand specs: 316L, 39mm without crown, 47.5mm lug-to-lug, 12.5mm including crystal, 20mm lugs, sapphire with AR coating (side not stated), plated hands, "retro" yellow-green lume, screw-down crown with 3D "S" logo, screw-down caseback, solid steel bracelet with solid clasp, 100m. Bezel, bracelet construction and weight are not described; the oyster style is from photos. The later 39mm "V2" listings with applied markers use the same quoted case: sn020-yn55a (SN020-G2), sn020-st2130 and sn020-sw200 (SN020-G3), sn020-pt5000 and sn020-sw200 (SN020-G4). 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