BewristHomage watches, measured
San Martin SN0086 MM300 diver, SN0086-G blue dial, blue bezel
SN0086 MM300 diver, SN0086-G blue dial, blue bezel

San Martin SN0086 MM300 diver

A homage of the Seiko Marinemaster 300

Price not listed yet

Size
44 mm across, 0.3 mm narrower than the Seiko
Movement
NH35A, automatic. Sapphire crystal
Look
Not compared mark by mark yet
Gives it away
0.3 mm narrower than the Seiko, 44 mm against 44.3 mm
Compare with another homage

No shop links yet.

Homages of the Seiko Marinemaster 300 you can buy

Against the Seiko

Seiko Marinemaster 300 SBDX02344.3Seiko Marinemaster 300 SBDX023
San Martin SN0086 MM300 diver44San Martin SN0086 MM300 diver

Photos use listed case widths and automatic case-edge readings. The readings have not been manually audited. Photo proportions stay unchanged. Perspective and lug length can differ.

44 mm, 0.3 mm narrower than the Seiko
Seiko Marinemaster 300 SBDX023 photo: SBDX023. San Martin SN0086 MM300 diver photo: SN0086-G blue dial, blue bezel.

The Seiko drawn is the SBDX023.

What gives it away

  • 0.3 mm narrower than the Seiko, 44 mm against 44.3 mm

  • Black dive bezel

    Not compared yet.

  • Large round plots

    Not compared yet.

  • Double bar at 12

    Not compared yet.

  • Wide sword hands

    Not compared yet.

  • Date at 3

    Not compared yet.

  • Crown at 4

    Not compared yet.

Seiko left, SN0086 MM300 diver right.

Everything else

Every spec16 listed, each with where it came from

Every spec we have

From sellers. Each figure links to where it was found.

Case width
44 mmsanmartin-watch.com, 2 Oct
Lug to lug
50 mmsanmartin-watch.com, 2 Oct
Thickness
13.5 mmsanmartin-watch.com, 2 Oct
Lug width
20 mmsanmartin-watch.com, 2 Oct
Movement type
Automaticsanmartin-watch.com, 2 Oct
Movement calibre
NH35Asanmartin-watch.com, 2 Oct
Case material
316L stainless steelsanmartin-watch.com, 2 Oct
Crystal
Sapphire, blue AG coatingsanmartin-watch.com, 2 Oct
Water resistance
300 msanmartin-watch.com, 2 Oct
Bezel
Ceramic, unidirectionalsanmartin-watch.com, 2 Oct
Bracelet material
Stainless steelsanmartin-watch.com, 2 Oct
Clasp
Folding safety claspsanmartin-watch.com, 2 Oct
Functions
Hours, minutes, seconds, datesanmartin-watch.com, 2 Oct
Lume
C3 greensanmartin-watch.com, 2 Oct
Warranty
2 yearssanmartin-watch.com, 2 Oct
Weight
192 gsanmartin-watch.com, 2 Oct
The movementTime Module NH35, in plain words

The movement, in plain words

San Martin lists the NH35A for the SN0086 MM300 diver.

How it runs. An automatic. Wearing it winds it.

Beat. It beats 21,600 times an hour, 6 a second, so the seconds hand sweeps in small steps.

Setting the time. The seconds hand stops when you pull the crown out, so you can set it to the second.

On your wrist44 mm across, 13.5 mm thick, on a wrist your size

How it sits on your wrist

Set your wrist circumference to compare the 44 mm case with a schematic wrist. The ellipse estimates wrist width and shape. It cannot predict your fit.

17.0 cm6.7 in around

This wrist model is about 56 mm across. The case spans 78% of that estimated width. The lug span ends 3.1 mm inside each model edge.

Wrap a strip of paper round your wrist just below the bone, mark where it meets and measure it.

44 mm case 50 mm lug to lug Wrist model about 56 mm across
Schematic section, with a 10 mm grid. The ellipse approximates wrist anatomy from circumference. Your wrist shape, lug curve and fit will differ.

How tall it stands

13.5 44 wide 50 lug to lug

The side view uses listed dimensions. Case shape and lug curve are schematic.

Side views to scale against other Seiko Marinemaster 300 homages.

  1. Octopus Kraken OCT01812.5 mm
  2. San Martin SN0086 MM300 diver13.5 mm
  3. San Martin SN0087 1968 diver14.2 mm
  4. Addiesdive MY-H717 mm
More from San Martin4 more on Bewrist

Every San Martin watch

Beside other Seiko Marinemaster 300 homagesThis watch and 4 more of its look, to scale

Drawn to scale by listed case width.

All 5 on the look page

SourcesThe page this record was built from