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Montblanc 1858 Iced Black Sea 41mm Mens Watch
Ref. 129372
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Stepping up in Montblanc's range
A 41 mm stainless steel dive watch built to ISO 6425 standards, with a unidirectional rotating bi-colour ceramic bezel and a domed sapphire crystal with double anti-reflective coating. The case is 12.9 mm thick and carries a screw-back engraved with an iceberg and diver motif. The black dial is worked in a glacier pattern using the gratté-boisé technique, giving the surface a distinctive textured quality. Rhodium-coated Arabic numerals, indexes, and matching hands all carry Super-LumiNova. A date window sits at three o'clock. The MB 24.17 automatic movement offers around 38 hours of power reserve. A tapered black rubber strap fastens with a stainless steel double-folding clasp featuring a dive extension.
- Reference
- 129372
- Brand
- Montblanc
- Collection
- 1858
- Case size
- 41mm
- Case thickness
- 12.9mm
- Lug width
- 20mm
- Case material
- Stainless steel
- Case shape
- Round
- Dial
- Black
- Crystal
- Sapphire
- Bezel
- Unidirectional rotating
- Movement
- Automatic
- Calibre
- MB 24.17
- Functions
- Date, Compass
- Water resistance
- 300m
- Bracelet / strap
- Rubber strap
- Strap colour
- Black
- Clasp
- Folding clasp
- Lume
- Luminous
- Retailer
- Goldsmiths
Additional specifications
- Power reserve
- 38 hours
- Origin
- Swiss made
Learn more about Montblanc
Montblanc was founded in Hamburg in 1906 as a fountain pen manufacturer, and the six-pointed white star that marks its products represents the snow-capped summit of the mountain. It entered watchmaking in 1997, initially as a luxury accessory line.
That changed decisively in 2007, when Richemont transferred the Minerva manufacture in Villeret to Montblanc. Minerva, founded in 1858, was one of the great chronograph specialists — it had produced its own monopusher chronograph calibres since 1908, including movements capable of measuring to a hundredth of a second, and had continued making them by traditional methods long after the industry mechanised.
Montblanc inherited that capability along with the tooling, archives, and watchmakers. The Villeret and 1858 collections now house Minerva-derived calibres with their distinctive devil's tail chronograph bridges, screwed balance wheels, and hand-finished components — genuine high horology at a house most people associate with pens.
The volume side of the business, produced at Le Locle, covers the Heritage, Star Legacy, and TimeWalker lines, and the 1858 Geosphere with its twin rotating hemisphere globes has become the signature model.
Montblanc has also pursued smartwatches through the Summit range and remains part of Richemont.
- 1906
- Founded in Hamburg as a fountain pen manufacturer.
- 1997
- Watchmaking begins at Le Locle.
- 2007
- The Minerva manufacture at Villeret is transferred to Montblanc.
- 2018
- The 1858 Geosphere becomes the signature model.
Also in 6 collections
This watch appears in the Montblanc 1858 range (7), Back in Stock (3,434), Stainless Steel Watches (2,782), Automatic Watches (1,540), Sports Watches (700) and Dive Watches (503).
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What the specifications mean
A mechanical watch built to be worn hard and got wet.
Strengths
- 300m water resistance, rated for actual diving
- Sapphire crystal, which resists scratching
- Luminous hands and markers for low light
Worth knowing
- 38-hour reserve means winding it after a day off
Montblanc 1858 Iced Black Sea alternatives
Watches from other brands at a similar price, style and size, so you can see what else your budget can buy.
| Specification | 129372 | SM40-ND-SS-GN-B | L37954599 |
|---|---|---|---|
| Price | £3,300 | £3,350 | £3,550 |
| Case size | 41mm | 40mm | 42mm |
| Water resistance | 300m | 300m | 300m |
| Movement | Automatic | Automatic | Automatic |
| Strap | Rubber strap | Stainless steel bracelet | Stainless steel bracelet |
| Power reserve | 38 hours | 50 hours | 72 hours |
| This watch | Closely matched | Closely matched |
Your new watch
Frequently asked questions, and things you should know about this watch
Can I swim with it?
Yes. At 300m it is rated for swimming, snorkelling and recreational diving.
Water resistance explainedWill the glass scratch?
Unlikely. Sapphire is second only to diamond in hardness and shrugs off everyday marking.
Sapphire, mineral and acrylic comparedDoes it need a battery?
No. It is automatic — the motion of your wrist winds it, and there is no cell to replace.
Quartz, automatic and solar comparedHow long does it run for when it's not worn?
About 38 hours fully wound — so it will usually stop if you leave it off overnight.
What size strap does it take?
20mm. Any strap of that width will fit, and on most modern watches quick-release bars make the swap a two-minute job with no tools.
Is it a men's or women's watch?
Listed as men's.
Cheapest place to buy
Both Mappin & Webb and Goldsmiths list it at £3,300, so choose on delivery and warranty rather than price.
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