San Martin · Factory brand · China

San Martin SN027 43mm (Seagull ST2100)

Ref. SN027-T3 · Diver

From $350
  • Seagull ST2100
  • 43 mm × 12.5 mm
  • Sapphire crystal
  • 200 m water resistance

Where to buy

Movement

Type
Automatic
Tier
Mid
Complications
Hours, Minutes, Seconds
Frequency
28,800 bph
Power reserve
41 h
Hacking
Yes
Accuracy (factory)
—

Case

Diameter
43 mm
Lug to lug
51 mm
Thickness
12.5 mm
Lug width
22 mm
Material
Titanium (Grade 5)
Hardening
—
Water resistance
200 m
Crown
Screw-down
Case back
Solid, screw-down
Bezel
Unidirectional, 60-minute dive, lumed

Crystal & dial

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

Bracelet

Bracelet
—

Straps

Strap 1
Leather, Beige stitching, titanium buckle

Weight

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

Prices

VariantConfigurationTypePriceUSDAs ofSource
All—Street350 USD$3502026-10-24link

Variants

NameReferenceDial
Grey dialSN027-T3grey

About this entry

87% of key specs known. Missing: hardening, bracelet offered.

The SN027-T3 listing (written "SN0027-T3" in its spec list; the title calls it a dress watch, the store files it under Diver) uses the same Grade 5 titanium case as the SN027-T1 and T2 with a Seagull ST2100. Brand specs: Grade 5 titanium, 43mm, 51mm lug-to-lug, 12.5mm (not stated whether that includes the crystal; the T2 listing gives the same figure including crystal), 22mm lugs, sapphire with AR coating (side not stated), unidirectional Grade 5 titanium bezel with luminous markers (clicks not stated), grey dial, BGW-9 lume glowing blue on hands and markers, screw-locked crown with 3D "S" logo, titanium screw-down caseback, leather strap with beige stitching and titanium buckle, 200m, about 86g (not stated what was weighed), no custom logo. The listing also carries a "Stainless Steel Bracelet / Leather Strap" attribute but has no orderable variations and shows only the leather strap, so the bracelet is left unknown. The movement shows day and date but the photos show no windows, so complications are time only. Single product at $350, out of stock on 2026-10-24.

Last verified: 2026-10-24. Edit or correct this entry.

Sources