The Montblanc Iced Sea 0 Oxygen Deep 4810 is a distinct 43 mm titanium dive watch, reference MB133268, with a COSC-certified automatic movement and a manufacturer-listed water-resistance rating of 4,810 meters. It is not the same watch as the Iced Sea Automatic Date models, including the black-coated steel 0 Oxygen variant featured on Montblanc’s 2026 novelties page.
What is the Montblanc Iced Sea 0 Oxygen Deep 4810?
The Deep 4810 is a Montblanc Iced Sea dive watch identified by reference MB133268. Montblanc describes its 43 mm titanium case as “totally devoid of oxygen.” The watch has a screw-down crown protected by a shield, a unidirectional rotating bezel and a 19.4 mm case height.
Its blue sfumato dial uses a glacier pattern made with the gratté-boisé technique. Montblanc says the design takes inspiration from the Mer de Glace, the main glacier of the Mont-Blanc Massif. White luminescent rhodium-coated Arabic numerals and indexes mark the dial. On the back, a 3D engraving depicts the view divers see beneath ice.
How deep is the Deep 4810 rated?
Montblanc lists the Deep 4810 as water-resistant to 4,810 meters, or 481 bar, and says it conforms to ISO 6425 for scuba diving. That is the manufacturer’s stated rating, not an independent test result or guidance that a wearer should dive to that depth.
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Movement and power reserve
The watch is powered by Montblanc’s Manufacture automatic MB 29.29 movement, which the company says is COSC-certified. Its stated power reserve is approximately five days. These specifications distinguish it from the MB 24.17 movement named for the 2026 Iced Sea Automatic Date 0 Oxygen variant.
Deep 4810 and Iced Sea Automatic Date compared
“Iced Sea Automatic Date” covers multiple models and materials, so the comparison below is specifically with the black-coated steel 0 Oxygen variant described on Montblanc’s 2026 novelties page. The available page details do not establish that model’s water-resistance rating or dimensions.
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| Feature | Iced Sea 0 Oxygen Deep 4810 | 2026 Iced Sea Automatic Date 0 Oxygen |
|---|---|---|
| Reference or model identity | MB133268 | Not stated on the cited novelty-page details |
| Case | 43 mm titanium; 19.4 mm high | Distressed steel with black coating, brushed with quartzite sourced from Mont Blanc; dimensions not stated |
| Movement | MB 29.29 automatic; COSC-certified | MB 24.17 automatic |
| Power reserve | Approximately five days | Not stated |
| Water resistance | 4,810 meters (481 bar), per Montblanc | Not stated on the cited novelty-page details |
| Dial and case-back details | Blue sfumato glacier-pattern dial; 3D engraved case back | Quartzite-brushed black-coated steel case; the cited novelty-page details do not establish matching dial or case-back specifications |
The 2026 novelty page also displays Automatic Date 0 Oxygen prices of $4,300 and $4,500, plus a limited edition at $4,800. Those figures apply to the variants shown there, not to the Deep 4810.
How the models fit into the Iced Sea timeline
Fratello Watches reported on April 12, 2024 that the Iced Sea had become a standalone collection, with three additions: the Deep 4810, a bronze Automatic Date and a steel Automatic Date with a burgundy dial. Montblanc’s separate 2026 novelties page features an Iced Sea Automatic Date 0 Oxygen. The dates and model names describe different releases; the 2026 Automatic Date is not another name for the MB 29.29-equipped Deep 4810.
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Montblanc’s US Deep 4810 product page displayed $9,400, while its US Iced Sea collection page showed Deep 4810 listings at $9,800 and $10,300. These are conflicting amounts on official US pages, so check the exact reference and live listing before buying; neither figure should be treated as a settled current price. The collection includes different colors and 0 Oxygen variants, so its other prices should not be generalized to the Deep 4810.
Sources: Montblanc Iced Sea 0 Oxygen Deep 4810 product page; Montblanc Watch Novelties; Montblanc Iced Sea Collection; Fratello Watches, April 12, 2024.
Quick Recap
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- Movement : ST2100
- Dial diameter : Approx.38mm
- Thickness : Approx.12.5mm
- Strap width: 20mm
- Mirror material : Synthetic Sapphire
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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
