BewristHomage watches, measured
Alpha Mechanical chronograph, Speedmaster-inspired black-dial variant, black · steel
Mechanical chronograph, black · steel

Alpha Mechanical chronograph

A homage of the Omega Speedmaster

Price not listed yet

Size
42 mm across, the same width as the Speedmaster
Movement
Seagull ST1903, automatic. Mineral crystal
Look
Not compared mark by mark yet
Compare with another homage

Against the Speedmaster

Omega Speedmaster 310.30.42.50.01.00142Omega Speedmaster 310.30.42.50.01.001
Alpha Mechanical chronograph42Alpha Mechanical chronograph

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.

42 mm, the same width as the Speedmaster
Omega Speedmaster 310.30.42.50.01.001 photo: 310.30.42.50.01.001. Alpha Mechanical chronograph photo: black · steel.

The Omega drawn is the 310.30.42.50.01.001.

  • Black tachymeter bezel

    Not compared yet.

  • Three subdials

    Not compared yet.

  • Baton hour markers

    Not compared yet.

  • Baton hands

    Not compared yet.

  • Asymmetric case

    Not compared yet.

Omega left, Mechanical chronograph right.

Everything else

Every spec13 listed, each with where it came from

Every spec we have

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

Case width
42 mmalpha-1993.com, 2 Oct
Lug to lug
48 mmalpha-1993.com, 2 Oct
Thickness
16 mmalpha-1993.com, 2 Oct
Lug width
20 mmalpha-1993.com, 2 Oct
Movement type
Manual-wind mechanical chronographalpha-1993.com, 2 Oct
Movement calibre
Sea-Gull ST1903alpha-1993.com, 2 Oct
Case material
316L stainless steelalpha-1993.com, 2 Oct
Crystal
Reinforced mineralalpha-1993.com, 2 Oct
Water resistance
5 baralpha-1993.com, 2 Oct
Bracelet material
316L stainless steelalpha-1993.com, 2 Oct
Functions
30-minute chronograph, small seconds, 24-hour subdialalpha-1993.com, 2 Oct
Power reserve
42 hoursalpha-1993.com, 2 Oct
Warranty
1 yearalpha-1993.com, 2 Oct
The movementSeagull ST1903, in plain words

The movement, in plain words

Alpha lists the Seagull ST1903 for the Mechanical chronograph. It is an automatic, so wearing it winds it.

On your wrist42 mm across, 16 mm thick, on a wrist your size

How it sits on your wrist

Set your wrist circumference to compare the 42 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 75% of that estimated width. The lug span ends 4.1 mm inside each model edge.

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

42 mm case 48 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

16 42 wide 48 lug to lug

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

Side views to scale against other Omega Speedmaster homages.

  1. Watchdives WD1863 Space Pilot12.9 mm
  2. Corgeut 3022-SL13 mm
  3. Pagani Design PD-170114 mm
  4. Alpha Mechanical chronograph16 mm
Earlier prices1 seen before, with the date

  • Alpha 1993 storefront €165.29 (about £142), seen 2 Oct

    Condition: Pre-owned.

    Seller page
More photographs1 from makers, sellers and owners

More photographs

More from Alpha4 more on Bewrist

Every Alpha watch

Beside other Omega Speedmaster homagesThis watch and 5 more of its look, to scale

Drawn to scale by listed case width.

All 7 on the look page

SourcesThe page this record was built from