San Martin · Factory brand · China

San Martin SN040 40mm (NH35)

Ref. SN040-G · Diver

San Martin SN040-G 40mm steel diver with black full-numeral dial, black ceramic bezel and black rubber strap
Photo: San Martin
  • San Martin SN040-G with blue full-numeral dial on blue rubber strap
  • San Martin SN040-G with green full-numeral dial on green rubber strap
  • San Martin SN040-G1 with matte black dot-and-baton dial, date at 3 and black rubber strap
  • San Martin SN040-G with green dial, angled view of the case and bezel
From $199
  • Seiko NH35A
  • 40 mm × 13.5 mm
  • Sapphire crystal
  • 200 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
40 mm
Lug to lug
—
Thickness
13.5 mm
Lug width
20 mm
Material
Steel (316L)
Hardening
—
Water resistance
200 m
Crown
Screw-down
Case back
Solid, screw-down
Bezel
60-minute dive, ceramic insert, lumed

Crystal & dial

Crystal
Sapphire
Shape
Flat
Anti-reflective
—
Lume
C3 (green) on hands and markers

Bracelet

Bracelet
Not offered

Straps

Strap 1
Rubber, 20mm rubber dive strap in the dial colour, 316L steel pin buckle

Weight

Head only
—
On bracelet
—
On strap
110 g

Prices

VariantConfigurationTypePriceUSDAs ofSource
Black numeral dial—Street199 USD$1992026-10-24link
Blue numeral dial—Street199 USD$1992026-10-24link
Green numeral dial—Street199 USD$1992026-10-24link
G1 matte black dial, date—Street199 USD$1992026-10-24link

Variants

NameReferenceDial
Black numeral dialSN040-Gblack
Blue numeral dialSN040-Gblue
Green numeral dialSN040-Ggreen
G1 matte black dial, dateSN040-G1black

About this entry

80% of key specs known. Missing: lug-to-lug, hardening, AR coating.

The steel SN040, sold as two listings with the same specs: SN040-G (black, blue or green full-numeral dial) and SN040-G1 (matte black dot-and-baton dial), both $199 with or without the San Martin logo (custom logos on request). Brand specs, as quoted on both listings: "Time Module NH35A", 316L, 40mm excluding crown, 13.5mm including crystal, 20mm lugs, sapphire (the G1 listing says flat), ceramic bezel, luminous hands, C3 Super Luminous glowing green, screw-in crown, screw-in caseback with a pressed shark, 20mm rubber dive strap with a 316L buckle, about 110g (read as on the strap, the only option), 200m; lug-to-lug is not stated, and the SN040-G listing warns its figures are hand-measured. The 60-minute bezel scale and lume pip at 12 are from photos; bezel direction and clicks are not stated. The SN040-G numeral dials show no date window while the SN040-G1 shows a date at 3, so complications are left to the movement. The bronze SN040-Q and Q2 are in sn040-bronze-pt5000 and sn040-bronze-sw200. 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