San Martin · Factory brand · China

San Martin SN033 38.5mm (YN55A)

Ref. SN033-G · Pilot

Design reference: WWII B-Uhr observation watches (Type A and Type B dials)

San Martin SN033-G 38.5mm pilot with coin-edge bezel and Type A black dial on steel bracelet
Photo: San Martin
  • San Martin SN033-G with Type B black dial on dark brown leather strap
  • San Martin SN033-G with Type B dials on bracelet and leather strap
  • San Martin SN033-G coin-edge bezel and bracelet detail
  • San Martin SN033-G brushed screw-down caseback
From $158 to $188
  • Epson YN55A
  • 38.5 mm × 12 mm
  • Sapphire crystal
  • 100 m water resistance

Movement

Type
Automatic
Tier
Entry
Complications
Hours, Minutes, Seconds
Frequency
21,600 bph
Power reserve
40 h
Hacking
Yes
Accuracy (factory)
—

Case

Diameter
38.5 mm
Lug to lug
48.5 mm
Thickness
12 mm
Lug width
20 mm
Material
Steel (316L)
Hardening
—
Water resistance
100 m
Crown
Screw-down
Case back
Solid, screw-down
Bezel
Fixed
Finishing
Brushed caseback

Crystal & dial

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

Bracelet & clasp

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

Straps

Strap 1
Leather, quick release, 20mm, 316L buckle

Weight

Head only
—
On bracelet
131 g
On strap
67 g

Prices

VariantConfigurationTypePriceUSDAs ofSource
Dial A Type A blacksteel braceletStreet188 USD$1882026-10-24link
Dial A Type A blackleather strapStreet158 USD$1582026-10-24link
Dial B Type B blacksteel braceletStreet188 USD$1882026-10-24link
Dial B Type B blackleather strapStreet158 USD$1582026-10-24link

Variants

NameReferenceDial
Dial A Type A blackSN033-Gblack
Dial B Type B blackSN033-Gblack

About this entry

79% of key specs known. Missing: hardening, end links, link attachment, clasp micro-adjust.

The SN033 is a pilot-style case with a carved coin-edge steel bezel and an onion crown, sold as the 38.5mm SN033-G (YN55A, sn033-38-5mm-yn55a), the 38.5mm SN033-G2 (NH35, sn033-nh35) and the 39.5mm SN033-C (YN55A, sn033-39-5mm-yn55a). Brand specs for the SN033-G: YN55 (recorded as the Epson YN55A, as on the other San Martin YN55 models), 316L, 38.5mm, 48.5mm lug-to-lug, 12mm (not stated whether including crystal), 20mm lugs, carved coin-pattern 316L bezel, top-hat sapphire crystal (recorded as a box shape) with AR coating (side not stated), black Type A or Type B dial, luminous hands, Super-LumiNova C3 green on hands and markers, screw-down onion crown, brushed screw-down caseback, 20mm 316L bracelet with female end links and folding clasp with safety and 3D hexagonal logo, or a quick-release leather strap with 316L buckle, 100m, "about 131g/67g" (read as bracelet/strap). Bracelet style and link count are from the photos. $188 on the bracelet, $158 on leather; custom logos are offered. Photos show no date window, so complications are time only. Inspired_by is read from the design; the brand does not name it. 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