VPC Type 39VM: Ultra-Thin Dive Watch Challenges Movement Engineering Limits

VPC Type 39VM: Ultra-Thin Dive Watch Challenges Movement Engineering Limits

The quest for thinner watches has reached the dive watch category with the introduction of the VPC Type 39VM, claimed to be the world's thinnest 200-meter automatic dive watch. At just 9.34mm total thickness (including crystal), this Dutch microbrand creation demonstrates how movement selection and case engineering can push the boundaries of traditional watch categories.

Sellita SW300-1b: The Slim Movement Choice

At the heart of the VPC Type 39VM sits the Sellita SW300-1b, a movement chosen specifically for its thin profile. This caliber, an alternative to the ETA 2892, measures just 3.6mm thick while delivering reliable automatic performance. The movement specifications include:

• 28,800 vph (4Hz) frequency – standard for modern automatic movements
• 56-hour power reserve – exceptional for a movement this thin
• COSC-certified chronometer – top-grade execution ensures accuracy
• Date-free layout – maintaining dial symmetry

The SW300-1b's slim dimensions were crucial in achieving the Type 39VM's record-breaking thinness. Traditional dive watches often sacrifice thinness for robustness, but VPC has demonstrated that careful engineering can achieve both.

Technical Specifications

Engineering a Thin Dive Watch

Creating a thin dive watch presents unique engineering challenges. Dive watches require robust construction to withstand water pressure, yet the VPC Type 39VM achieves 200m water resistance while maintaining its slim profile. This required innovations in case construction, including:

• Hardened steel construction – 1,800 Vickers hardness coating resists scratches while maintaining structural integrity
• Optimized case geometry – the distinctive ledge where case and bracelet meet provides strength without bulk
• Screw-down crown system – maintains water resistance while minimizing thickness
• Flat sapphire crystal – with underside AR coating for clarity without added height

The 120-click unidirectional bezel features a matte black ceramic insert with fully lumed markings, demonstrating that thinness doesn't require sacrificing dive watch functionality.

The Movement's Role in Thin Watch Design

The Sellita SW300-1b's 3.6mm thickness was essential to achieving the Type 39VM's overall 9.34mm profile. For comparison, many automatic dive watches exceed 12mm in thickness. The movement's slim dimensions allowed VPC to allocate more space to water resistance engineering while keeping the overall package thin.

The 56-hour power reserve is particularly impressive for a movement this thin. Many slim movements sacrifice power reserve for dimensions, but the SW300-1b maintains practical autonomy while fitting within tight constraints.

Collectibility and Market Position

With only 300-500 pieces planned, the VPC Type 39VM positions itself as a collectible microbrand offering. The presale model, requiring full upfront payment, indicates strong demand from enthusiasts who appreciate the brand's "beauty-through-restraint" philosophy.

Founded by Thomas van Straaten, a watch journalist at Fratello, VPC represents the intersection of watch journalism expertise and microbrand innovation. The brand's minimalist, function-first approach resonates with collectors seeking alternatives to mainstream offerings.

Frequently Asked Questions

How does the VPC Type 39VM achieve 200m water resistance at 9.34mm thickness?

The Type 39VM achieves this through optimized case engineering, including hardened steel construction, a screw-down crown system, and flat sapphire crystal. The Sellita SW300-1b's slim 3.6mm profile provides the foundation, while VPC's case design allocates space efficiently for water resistance engineering.

Is the Sellita SW300-1b a reliable movement for dive watches?

The SW300-1b is a proven, COSC-certified chronometer movement with excellent reliability. While it's not a dedicated dive movement, its 56-hour power reserve and accuracy make it suitable for recreational diving. The movement's thin profile is its primary advantage in this application.

How does the VPC Type 39VM compare to other thin dive watches?

At 9.34mm, the Type 39VM is thinner than most automatic dive watches on the market. The previous record holder, Mido Ocean Star 39, measures 10.5mm. The VPC's thinness comes at a premium price (€2,768+), positioning it as a luxury alternative to more mainstream thin dive watches.

Conclusion

The VPC Type 39VM demonstrates that movement selection is crucial in achieving record-breaking watch dimensions. By choosing the slim Sellita SW300-1b and engineering an optimized case, VPC has created the world's thinnest 200m automatic dive watch. For collectors seeking thin, functional timepieces with genuine dive capabilities, the Type 39VM offers a compelling proposition that pushes the boundaries of traditional watch categories.

Sources: Monochrome Watches

Explore more dive watch innovations at Dive Watch Technology and Thin Watches.