San Martin · Factory brand · China

San Martin SN034 37mm Bronze (YN55A)

Ref. SN034-Q-D · Pilot

From $169
  • Epson YN55A
  • 37 mm × 10 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
40 h
Hacking
Yes
Accuracy (factory)
—

Case

Diameter
37 mm
Lug to lug
45.5 mm
Thickness
10 mm
Lug width
20 mm
Material
Bronze (CuSn8)
Hardening
—
Water resistance
100 m
Crown
Screw-down
Case back
Solid, screw-down
Bezel
Fixed

Crystal & dial

Crystal
Sapphire
Shape
—
Anti-reflective
Yes (side not stated)
Lume
C3 (green) and BGW9 (blue) on hands and markers

Bracelet

Bracelet
Not offered

Straps

Strap 1
Leather, quick release, Dark brown leather, 20mm, bronze pin buckle

Weight

Head only
—
On bracelet
—
On strap
59 g

Prices

VariantConfigurationTypePriceUSDAs ofSource
All—Street169 USD$1692026-10-24link

Variants

NameReferenceDial
Textured black dialSN034-Q-Dblack

About this entry

93% of key specs known. Missing: hardening.

Bronze SN034 with an automatic movement; see sn034-8215 for the other SN034 builds and sn034-bronze-ronda-6004 for the quartz bronze version. The listing says "YN55", recorded as the Epson YN55A as in the brand's other YN55 models. Brand specs (written "SN0034-Q-D" in the spec list): CuSn8 bronze, 37mm, 45.5mm lug-to-lug, 10mm (not stated whether including crystal), 20mm lugs, sapphire "with Blue Light AG Coating" (recorded as AR coated, side not stated), "oil pressure fire pattern" black or matte black dial (the photos show one textured black dial with Arabic numerals), IPG gold-plated luminous hands, C3 green plus BGW-9 blue lume on hands and markers, screw-down crown with 3D hexagon logo, screw caseback (a plain steel caseback in photos), 20mm quick-release leather strap with bronze buckle, 100m, about 59g (the same figure as the quartz SN034-Q-C, so possibly copied; read as on the strap). Sold with or without the logo at the same price. No bracelet is offered. The movement has a date but photos show no date window, so complications are time only. Both variations showed "Out of stock" on 2026-10-25, so production status is unknown.

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

Sources