Montblanc Iced Sea 0 Oxygen 38mm: ISO 6425 Certified Dive Watch With Zero Oxygen Technology
Montblanc Iced Sea 0 Oxygen 38mm: ISO 6425 Certified Dive Watch With Zero Oxygen Technology
At Watches and Wonders 2025, Montblanc introduced a new chapter in its Iced Sea collection with the Montblanc Iced Sea 0 Oxygen 38mm. This new release brings the collection's ISO 6425-certified dive watch credentials to a more compact 38mm case size, paired with the brand's proprietary 0 Oxygen technology and two new glacier-inspired dial colors.
According to aBlogtoWatch, the Montblanc Iced Sea Automatic Date collection, first introduced in 2022, features dials inspired by the icy formations of the Mer de Glace on the Mont Blanc Massif. The 38mm models maintain the robust construction and dive-ready credentials of their predecessors while integrating cutting-edge 0 Oxygen technology that eliminates all oxygen from inside the case.
Understanding ISO 6425 Certification
Like earlier versions, the 38mm Iced Sea models adhere to the ISO 6425 standard for certified divers' watches. This international standard requires dive watches to meet specific criteria for water resistance, legibility, and durability. The ISO 6425 certification ensures that each timepiece has been tested to withstand the pressures and conditions encountered during diving operations.
0 Oxygen Technology Explained
Montblanc's 0 Oxygen technology represents a significant advancement in dive watch engineering. By eliminating all oxygen from inside the case, the technology provides several benefits:
- Anti-fogging: Prevents condensation and fogging due to sudden temperature changes
- Oxidation protection: Shields internal components from corrosion and degradation
- Enhanced durability: Extends the operational lifespan of the movement
- Long-term precision: Maintains accuracy over extended periods
Each watch comes with a certificate verifying the successful implementation of 0 Oxygen technology. Starting in April 2025, Montblanc will integrate this technology into all newly produced Iced Sea models. Additionally, owners of previous editions can upgrade their watches by sending them to a Richemont service center or a Montblanc boutique.
New Glacier-Inspired Dials
The 38mm models debut two fresh dial colors crafted using the intricate gratté-boisé technique, which creates a textured effect reminiscent of real ice. This process takes four times longer to complete than a standard dial, requiring over 30 distinct steps to achieve its frozen aesthetic.
The Glacier White dial marks a first for the Iced Sea collection, while the Glacier Light Blue variant debuts with a sfumato effect, an Italian technique that blends colors seamlessly for a soft, smoky transition. Both dials feature luminescent hands, indexes, and a 12 o'clock bezel marker for enhanced legibility in low-light conditions.
Technical Specifications
| Specification | Detail |
|---|---|
| Case Diameter | 38mm |
| Case Thickness | ~12mm |
| Movement | Montblanc Caliber MB24.17 (Sellita SW200 base) |
| Power Reserve | 38 hours |
| Jewels | 26 |
| Frequency | 28,800 vph |
| Water Resistance | ISO 6425 Certified |
| Bezel | Unidirectional rotating, ceramic or aluminum insert |
| Crystal | Sapphire |
Caseback Design and Finishing
A signature feature of the Iced Sea collection, the caseback showcases an intricate 3D engraving of a scuba diver beneath an iceberg. Each watch undergoes the rigorous Montblanc Laboratory Test, ensuring resistance to shocks, magnetic fields, and temperature fluctuations. The MB 24.17 movement features the signature Montblanc finishes visible through the sapphire display caseback.
Pricing and Availability
The Montblanc Iced Sea 0 Oxygen 38mm Glacier White and Glacier Blue are both available now. Pricing stands at $3,460 on a rubber strap or $3,660 on a stainless steel bracelet. Both variants are available through authorized Montblanc retailers and the brand's official website.
Frequently Asked Questions
What is the difference between ISO 6425 and regular water resistance ratings?
ISO 6425 is a comprehensive standard specifically for dive watches. While a regular water resistance rating (e.g., "100m") indicates pressure resistance, ISO 6425 also requires specific legibility standards, a unidirectional bezel, magnetic resistance, and shock resistance. ISO 6425 certification means the watch has been tested as a complete diving instrument, not just a water-resistant timepiece.
Can existing Montblanc Iced Sea owners upgrade to 0 Oxygen technology?
Yes, starting in April 2025, owners of previous Iced Sea editions can have 0 Oxygen technology installed by sending their watches to a Richemont service center or a Montblanc boutique. This upgrade ensures compatibility with the latest technical standards.
Why is the gratté-boisé dial technique significant?
The gratté-boisé technique requires over 30 distinct steps and takes four times longer than standard dial production. This handcrafted approach creates a textured, ice-like surface that cannot be replicated by machine processes, making each dial subtly unique.
Source: According to aBlogtoWatch
Learn more about dive watch certifications in our water resistance guide, or explore our collection of ISO 6425 certified dive watches.