BewristHomage watches, measured
Addiesdive MY-H7, green Marinemaster, steel bracelet
MY-H7, green Marinemaster, steel bracelet

Addiesdive MY-H7

A homage of the Seiko Marinemaster 300

about £104 $139, seen 2 Oct

At ADDIESDIVE storefront, sold out on 2 Oct. For the Blue version.

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

Where to buy

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Against the Seiko

Seiko Marinemaster 300 SBDX02344.3Seiko Marinemaster 300 SBDX023
Addiesdive MY-H744Addiesdive MY-H7

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. Addiesdive MY-H7 photo: MY-H7 green Marinemaster, steel bracelet.

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, MY-H7 right.

Everything else

Every spec9 listed, each with where it came from

Every spec we have

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

For the MY-H7 version.

Case width
44 mmaddiesdivewatches.com, 2 Oct
Thickness
17 mmaddiesdivewatches.com, 2 Oct
Lug width
20 mmaddiesdivewatches.com, 2 Oct
Movement calibre
NH35Aaddiesdivewatches.com, 2 Oct
Case material
316L stainless steeladdiesdivewatches.com, 2 Oct
Crystal
Sapphire, curved on both sidesaddiesdivewatches.com, 2 Oct
Water resistance
30 baraddiesdivewatches.com, 2 Oct
Bezel
Ceramic, rotatingaddiesdivewatches.com, 2 Oct
Power reserve
41 hoursaddiesdivewatches.com, 2 Oct
The movementTime Module NH35, in plain words

The movement, in plain words

Addiesdive lists the NH35A for the MY-H7.

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, 17 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. Lug to lug is unknown, so no lug extent is drawn.

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

44 mm case 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

17 44 wide

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

Lug to lug is not listed yet, so the drawing stops at the case.

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 Addiesdive4 more on Bewrist

Every Addiesdive 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 3 pages this record was built from