San Martin · Factory brand · China

San Martin SN087 44mm

Ref. SN087-G · Diver

Design reference: Seiko Marinemaster 300

From $269
  • Seiko NH35A
  • 44 mm × 14.2 mm
  • Sapphire crystal
  • 300 m water resistance

Where to buy

Movement

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

Case

Diameter
44 mm
Lug to lug
50.5 mm
Thickness
14.2 mm
Lug width
19 mm
Material
Steel (316L)
Hardening
—
Water resistance
300 m
Crown
Screw-down
Case back
—
Bezel
Unidirectional, 120 clicks, ceramic insert, lumed

Crystal & dial

Crystal
Sapphire
Shape
—
Anti-reflective
Yes (side not stated)
Lume
Super-LumiNova C3 on hands and markers

Bracelet & clasp

Style
—
Links per row
—
Solid end links
—
Solid links
—
Link attachment
—
Taper
19 → 16 mm
Quick release
—
Half links
—
Clasp
Fold-over
Micro-adjust
—
Diver extension
—

Weight

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

Prices

VariantConfigurationTypePriceUSDAs ofSource
All—Street269 USD$2692026-10-24link

Variants

NameReferenceDialBezel
Black gilt dialSN087-Gblack with gilt markersblack ceramic

About this entry

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

The SN087-G listing (spec text "SN0087-G") sells one NH35A diver with a black dial, gilt applied hexagon logo and indices, gilt hands and a date window, at $269 with the logo (a "Without Logo" option is listed but has no orderable variation; custom logos are offered). Brand specs: 316L, 44mm, 50.5mm lug-to-lug, 14.2mm (not stated whether that includes the crystal), 19mm lugs ("lug to lug width"), sapphire with "Blue Light AG Coating" (read as an anti-reflective coating, side not stated), 120-click unidirectional bezel with ceramic top ring and lumed 12 o'clock marker, SLN C3 green lume on hands and markers, screw-down crown with hexagon logo, brushed "integrated case back" (recorded as monocoque), all-brushed 316L bracelet 19mm tapering to 16mm, folding clasp with safety (micro-adjust not stated), 300m, about 181g (not stated what was weighed). Inspired_by follows the brand's own "Vintage MM300" in the listing title. The listing showed "Out of stock" on 2026-10-25, so production status is unknown.

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

Sources