San Martin · Factory brand · China

San Martin SN056 45mm

Ref. SN056-G · Diver

San Martin SN056-G 45mm diver, Case A, black enamel dial and date at 3 on rubber strap
Photo: San Martin
  • San Martin SN056-G 45mm diver, Case B, black enamel dial on rubber strap
  • San Martin SN056-G screw-in solid caseback
  • San Martin SN056-G lume shot
From $209 to $210
  • Seiko NH35A
  • 45 mm × 17 mm
  • Sapphire crystal
  • 300 m water resistance

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
45 mm
Lug to lug
55 mm
Thickness
17 mm
Lug width
22 mm
Material
Steel (316L)
Hardening
—
Water resistance
300 m
Crown
Screw-down
Case back
Solid, screw-down
Bezel
60-minute dive

Crystal & dial

Crystal
Sapphire
Shape
Double-domed
Anti-reflective
Yes (side not stated)
Lume
BGW-9 (blue)

Bracelet

Bracelet
Not offered

Straps

Strap 1
FKM rubber, Fluororubber, 22mm tapering to 20mm, 316L buckle

Weight

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

Prices

VariantConfigurationTypePriceUSDAs ofSource
Case A, black enamel dialSan Martin logoStreet209 USD$2092026-10-24link
Case A, black enamel dialNo logoStreet210 USD$2102026-10-24link
Case B, black enamel dialSan Martin logoStreet209 USD$2092026-10-24link
Case B, black enamel dialNo logoStreet210 USD$2102026-10-24link

Variants

NameReferenceDial
Case A, black enamel dialSN056-Gblack
Case B, black enamel dialSN056-Gblack

About this entry

93% of key specs known. Missing: hardening.

The SN056-G (listed as SN056G; store category SN056), a 45mm 300m diver with a Seiko NH35. The listing offers two case designs, Case A and Case B, with one set of specs at the same price; the photos show the same layout with differently shaped flanks around the crown, so they are kept as variants. Each is $209 with the San Martin logo or $210 without (custom logo also listed). Brand specs: 316L, 45mm without crown, 55mm including lugs, 17mm including the crystal, 22mm lugs, double-domed sapphire with Swiss anti-reflective coating (side not stated), black enamel dial with applied logo and markers, multi-faceted GS-style hands, BGW-9 lume glowing blue, screw-in crown, screw-in solid caseback, fluororubber strap 22mm tapering to 20mm with 316L buckle, 300m, about 135g (not stated what was weighed). The photos show a 60-minute dive bezel with a pip at 12 and a date at 3; bezel direction and insert material are not stated. The brand calls it an original design, so inspired_by is left blank. Every variation showed "Out of stock" on 2026-10-25, so production status is unknown.

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

Sources