BewristHomage watches, measured
Berny AM158M Swiss railway full-lume watch, AM158M white/cream dial, black leather strap
AM158M, white/cream dial, black leather strap

Berny AM158M

A homage of the Mondaine Swiss Railway

V4 white Miyota 8215 leather version: about £78 $103.99, seen 2 Oct

At Bernywatch.com, in stock on 2 Oct.

Size
40 mm across, 4 mm wider than the Mondaine
Movement
Miyota 8215, automatic. Sapphire crystal
Look
Not compared mark by mark yet
Gives it away
Fully lumed dial1 more under “Against the Mondaine”
Compare with another homage
View at Berny

This button is for the V4 white Miyota 8215 leather version. The photo shows the AM158M white/cream dial, black leather strap.

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Against the Mondaine

Mondaine Swiss Railway A660.30314.11SBBV36Mondaine Swiss Railway A660.30314.11SBBV
Berny AM158M40Berny AM158M

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.

40 mm, 4 mm wider than the Mondaine
Mondaine Swiss Railway A660.30314.11SBBV photo: A660.30314.11SBBV. Berny AM158M photo: AM158M white/cream dial, black leather strap.

The Mondaine drawn is the A660.30314.11SBBV.

What gives it away

  • 4 mm wider than the Mondaine, 40 mm against 36 mm
  • Fully lumed dial

  • Black bar markers

    Not compared yet.

  • Bar hands

    Not compared yet.

  • Red seconds hand with a disc

    Not compared yet.

  • Fine minute ticks

    Not compared yet.

  • Plain polished case

    Not compared yet.

Mondaine left, AM158M right.

Everything else

Every spec15 listed, each with where it came from

Every spec we have

From Berny's own pages. Each figure links to where it was found.

For the AM158M V4 white Miyota 8215 leather version.

Case width
40 mmbernywatch.com, 2 Oct
Lug to lug
47.5 mmbernywatch.com, 2 Oct
Thickness
11.9 mmbernywatch.com, 2 Oct
Lug width
22 mmbernywatch.com, 2 Oct
Movement type
Automaticbernywatch.com, 2 Oct
Movement calibre
Miyota 8215bernywatch.com, 2 Oct
Case material
Stainless steelbernywatch.com, 2 Oct
Crystal
Sapphirebernywatch.com, 2 Oct
Water resistance
50 mbernywatch.com, 2 Oct
Bracelet material
Genuine leatherbernywatch.com, 2 Oct
Lume
Super full dialbernywatch.com, 2 Oct
Power reserve
42 hoursbernywatch.com, 2 Oct
Return policy
30-day returnsbernywatch.com, 2 Oct
Warranty
1 yearbernywatch.com, 2 Oct
Weight
72 gbernywatch.com, 2 Oct
The movementMiyota 8215, in plain words

The movement, in plain words

Berny lists the Miyota 8215 for the AM158M.

How it runs. An automatic that also winds by hand through the crown. Wearing it keeps it running.

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

Off the wrist. It runs for about 42 hours once fully wound. Take it off on Friday evening and it will have stopped by Sunday around midday.

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

Accuracy. Miyota's figure is -20 to +40 seconds a day.

On your wrist40 mm across, 11.9 mm thick, on a wrist your size

How it sits on your wrist

Set your wrist circumference to compare the 40 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 71% of that estimated width. The lug span ends 4.3 mm inside each model edge.

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

40 mm case 47.5 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

11.9 40 wide 47.5 lug to lug

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

What owners report5 reports on 4 topics

What owners report

Written reviews, owner posts and owner reports. Each covers one watch, so read them as things to check rather than a verdict.

Lume2 reports

  • Bert reports very bright full-dial lume during ordinary wear; no controlled duration test appears.

    Written review on watchbert.com, 26 Nov 2025

  • The owner preferred this BGW9 dial to their comparison watches immediately after charging and after three minutes.

    Owner post on blue-san.com, 24 Nov 2024

Finishing1 report

From owners1 report

  • Owner reviewed a BGW9 rubber-strap version, comparing initial and three-minute lume with other watches. Rubber felt less robust for frequent changes. This is a separate strap/lume configuration.

    Owner report on blue-san.com, 24 Nov 2024

From reviews1 report

  • Reviewer bought their example and praises exceptional full-dial lume, but reports sharp brushed case surfaces and a noisy rotor. Their movement label 8205 disagrees with the current 8215 page.

    Written review on watchbert.com

More from Berny3 more on Bewrist

Every Berny watch

Beside other Mondaine Swiss Railway homagesThis watch and 1 more of its look, to scale
  • Berny AM158M

    This watch

    40 mm

  • Berny AM138M-L

    about £72 $95.99, seen 2 Oct40 mm

Drawn to scale by listed case width.

All 2 on the look page

SourcesThe 6 pages this record was built from