BewristHomage watches, measured
San Martin SN0054 Black Bay Pro GMT, SN0054G-F black dial, white bezel numerals
SN0054 Black Bay Pro GMT, SN0054G-F black dial, white bezel numerals

San Martin SN0054 Black Bay Pro GMT

A homage of the Tudor Black Bay

Price not listed yet

Size
38.3 mm across, 0.7 mm narrower than the Tudor
Movement
HZ6460, automatic. Sapphire crystal
Look
Not compared mark by mark yet
Gives it away
0.7 mm narrower than the Tudor, 38.3 mm against 39 mm
Compare with another homage

Against the Tudor

Tudor Black Bay M79030B-000139Tudor Black Bay M79030B-0001
San Martin SN0054 Black Bay Pro GMT38.3San Martin SN0054 Black Bay Pro GMT

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.

38.3 mm, 0.7 mm narrower than the Tudor
Tudor Black Bay M79030B-0001 photo: M79030B-0001. San Martin SN0054 Black Bay Pro GMT photo: SN0054G-F black dial, white bezel numerals.

The Tudor drawn is the M79030B-0001.

What gives it away

  • 0.7 mm narrower than the Tudor, 38.3 mm against 39 mm

  • Snowflake hour hand

    Not compared yet.

  • Triangle at 12

    Not compared yet.

  • Round hour plots

    Not compared yet.

  • Bars at 3, 6 and 9

    Not compared yet.

  • Coin-edge dive bezel

    Not compared yet.

  • Large crown

    Not compared yet.

Tudor left, SN0054 Black Bay Pro GMT right.

Everything else

Every spec17 listed, each with where it came from

Every spec we have

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

Case width
38.3 mmsanmartin-watch.com, 2 Oct
Lug to lug
47.8 mmsanmartin-watch.com, 2 Oct
Thickness
12.25 mmsanmartin-watch.com, 2 Oct
Lug width
20 mmsanmartin-watch.com, 2 Oct
Movement type
Automatic GMTsanmartin-watch.com, 2 Oct
Movement calibre
HZ6460sanmartin-watch.com, 2 Oct
Case material
316L stainless steelsanmartin-watch.com, 2 Oct
Crystal
Top-hat sapphire, AR coatingsanmartin-watch.com, 2 Oct
Water resistance
100 msanmartin-watch.com, 2 Oct
Bezel
Stainless steel 24-hoursanmartin-watch.com, 2 Oct
Bracelet material
316L stainless steelsanmartin-watch.com, 2 Oct
Clasp
On-the-fly adjustablesanmartin-watch.com, 2 Oct
Functions
Hours, minutes, seconds, GMT, datesanmartin-watch.com, 2 Oct
Lume
BGW-X1 bluesanmartin-watch.com, 2 Oct
Power reserve
40 hourssanmartin-watch.com, 2 Oct
Warranty
2 yearssanmartin-watch.com, 2 Oct
Weight
148 gsanmartin-watch.com, 2 Oct
The movementHZ6460, in plain words

The movement, in plain words

San Martin lists the HZ6460 for the SN0054 Black Bay Pro GMT. It is an automatic, so wearing it winds it.

On your wrist38.3 mm across, 12.25 mm thick, on a wrist your size

How it sits on your wrist

Set your wrist circumference to compare the 38.3 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 68% of that estimated width. The lug span ends 4.2 mm inside each model edge.

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

38.3 mm case 47.8 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

12.25 38.3 wide 47.8 lug to lug

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

Side views to scale against other Tudor Black Bay homages.

  1. Cronos L602512.1 mm
  2. Cronos L602612.1 mm
  3. San Martin SN0054 Black Bay Pro GMT12.25 mm
  4. Aquatico Bronze Sea Star14 mm
  5. Cronos L601714.05 mm
  6. Cronos L602214.2 mm
  7. Cronos L602114.45 mm
More from San Martin4 more on Bewrist

Every San Martin watch

Beside other Tudor Black Bay homagesThis watch and 5 more of its look, to scale

Drawn to scale by listed case width.

All 20 on the look page

SourcesThe page this record was built from