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Junghans · FORM A

Junghans FORM A Automatic

Reference 27/4239.00 · Classic · 39.3 mm

14Ø 39.3 mm
Illustration drawn from the specifications: case to scale, colours and style approximate. Not a photo. Photos on the official page

Specifications

Reference
27/4239.00
Family
FORM A
Category
Classic
Status
Current
Case material
Stainless steel
Case diameter
39.3 mm
Case thickness
9.5 mm Official
Lug-to-lug
—
Lug width
—
Water resistance
50 m
Bezel
—
Calibre
J800.2 Official
Power reserve
38 h

Official product page · retrieved October 19, 2026

Does it fit your wrist?

Enter your wrist circumference. The watch appears to scale on the flat top of the wrist.

14No lug-to-lug dataFlat top of the wrist 54.1 mm
Top view on a wrist, to scale
Flat top of the wrist 54.1 mmNo lug-to-lug dataCase diameter 39.3 mm
Side view, across the wrist

No lug-to-lug figure exists for this reference yet, so fit cannot be computed.

Measurements and sources

Brands rarely publish thickness, lug width and lug-to-lug together. Each observation below is kept separate, with who gave it.

Case thickness

Value Type Source Date
9.5 mm Official Junghans Published as the case height. October 19, 2026

Lug-to-lug

No source gave this figure yet.

Lug width

Lug width is the gap between the lugs, where the strap fits. It is not lug-to-lug.

No source gave this figure yet.

Calibre source

Official Junghans · retrieved October 19, 2026

Other versions in the same case

These references differ only by dial, bracelet or bezel colour. The brand gives them the same case dimensions, so the figures on this page apply to them too.

  • 27/4730.00 · matt silver-plated dial, leather strap
  • 27/4731.00 · matt silver-plated dial, leather strap

Other FORM A references

Watch Ø Thickness Lug-to-lug Calibre
FORM A Chronoscope 27/4370.00 42 mm 13.5 mm — J880.1

Other Junghans models

Watch Ø Thickness Lug-to-lug Calibre
FORM Quarz (39.3 mm) 41/4884.00 39.3 mm 7.1 mm — J645.37
FORM Quarz Bauhaus Edition 41/4580.44 39.3 mm 7 mm — J645.37
Milano Mega Solar 56/4220.00 39.2 mm 8.4 mm — J615.84
Meister fein Automatic (rose gold-coloured PVD) 27/7150.00 39.5 mm 10.3 mm — J800.1
Meister fein Automatic (steel) 27/4152.00 39.5 mm 10.3 mm — J800.1
Meister fein Automatic Signatur 27/4355.00 39.5 mm 11 mm — J800.1
Show 48 more
Watch Ø Thickness Lug-to-lug Calibre
FORM Quarz (39.9 mm) 41/4481.00 39.9 mm 7 mm — J645.37
max bill Regulator 27/4492.46 40 mm 10.9 mm — J800.5
Meister Automatic (38.4 mm) 27/4243.02 38.4 mm 9.9 mm — J800.1
Meister MEGA 58/4503.46 38.4 mm 9.2 mm — J101.65
Stratos Mega Solar 18/1111.00 39 mm 10.4 mm — J615.82
Meister Automatic (40.4 mm) 27/4416.02 40.4 mm 10.9 mm — J800.1
max bill Automatic (steel) 27/3400.02 38 mm 10 mm — J800.1
max bill Automatic (yellow gold-coloured PVD) 27/7002.02 38 mm 10 mm — J800.1
max bill Automatic Bauhaus 27/4308.02 38 mm 10 mm — J800.1
max bill Automatic Edition 60 27/4108.02 38 mm 10 mm — J800.1
max bill MEGA Kleine Sekunde Edition 60 58/4100.02 38 mm 9 mm — J101.66
max bill MEGA Solar (steel) 59/4325.02 38 mm 9 mm — J101.85
max bill Quarz (black PVD) 41/4660.46 38 mm 7.9 mm — J645.33
max bill Quarz (steel) 41/4461.02 38 mm 7.9 mm — J645.33
max bill Quarz (yellow gold-coloured PVD) 41/7872.02 38 mm 7.9 mm — J645.33
max bill Regulator Edition 60 27/3190.02 38 mm 10.5 mm — J800.5
Meister MEGA Solar 59/4603.02 38 mm 9 mm — J101.85
Meister Handaufzug 27/3200.02 37.7 mm 7.3 mm — J815.1
max bill MEGA Solar (titanium) 59/2020.02 38 mm 9 mm — J101.85
Milano Solar 14/4061.44 37 mm 7.5 mm — J622.10
1972 Mega Solar 56/4210.00 43.3 mm 10 mm — J615.84
Meister fein Kleine Automatic 27/4230.00 35 mm 10.1 mm — J800.1
FORM Damen 47/4055.00 34.1 mm 7 mm — J645.36
max bill Handaufzug (steel) 27/3004.46 34 mm 9 mm — J805.1
max bill Handaufzug (yellow gold-coloured PVD) 27/5703.02 34 mm 9 mm — J805.1
max bill Kleine Automatic 27/4006.02 34 mm 10 mm — J800.1
max bill Damen 47/4250.46 32.7 mm 6.9 mm — J643.29
Meister Damen Automatic 27/3242.00 33.1 mm 9.8 mm — J840.1
Force Mega Solar 18/1000.00 40.4 mm 8.2 mm — J615.84
Meister fein Chronoscope MEGA Solar (rose gold-coloured PVD) 59/7201.00 39.5 mm 9.5 mm — J110
Meister fein Chronoscope MEGA Solar (steel) 59/4200.00 39.5 mm 9.5 mm — J110
FORM C 41/4770.00 40 mm 10.5 mm — J645.85
max bill Chronoscope (steel) 27/4003.46 40 mm 14.4 mm — J880.2
max bill Chronoscope (yellow gold-coloured PVD) 27/7800.02 40 mm 14.4 mm — J880.2
max bill Chronoscope Bauhaus 27/4409.02 40 mm 14.4 mm — J880.2
Pilot Automatic (black PVD) 27/4491.00 43.3 mm 12.5 mm — J800.1
Pilot Automatic (steel, calibre J800.1) 27/4495.00 43.3 mm 12.5 mm — J800.1
Pilot Automatic (steel, calibre J840.1) 27/4490.00 43.3 mm 12.5 mm — J840.1
Meister Worldtimer (rose gold-coloured PVD) 27/5012.01 40.4 mm 10.5 mm — J820.5
Meister Worldtimer (steel) 27/3010.01 40.4 mm 10.5 mm — J820.5
Meister Chronoscope (steel) 27/4120.02 40.7 mm 13.9 mm — J880.1
Meister Chronoscope (yellow gold-coloured PVD) 27/7620.02 40.7 mm 13.9 mm — J880.1
1972 Chronoscope Sports Edition 2026 41/4558.00 43.3 mm 11.3 mm — J645.83
Pilot Chronoscope (black PVD) 27/3794.00 43.3 mm 14.4 mm — J880.4
Pilot Chronoscope (steel, calibre J880.3) 27/3492.00 43.3 mm 14.4 mm — J880.3
Pilot Chronoscope (steel, calibre J880.4) 27/3590.00 43.3 mm 14.4 mm — J880.4
Meister S Chronoscope 27/4023.44 45 mm 15.9 mm — J880.1
Aquaris Diver 27/4267.44 46.9 mm 14.5 mm — J830

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