Squale 1521 PVD: 1960s Skin Diver Heritage in a Modern Black Finish

For decades, dive watches have combined practical underwater functionality with design traditions shaped by the needs of divers. Among the names associated with the classic skin diver era, Squale Watch has a long history of making dive watch cases and dive watches. Its 1521 series continues this heritage with a case design rooted in 1960s dive watches, combined with modern materials and specifications. 

The black PVD finish gives the 1521 a darker, more contemporary look while preserving the design elements that define the collection. For enthusiasts who prefer an all-black style, this version pairs the familiar 1521 silhouette with a matte finish that adds a modern touch to its classic dive-watch design. Its Swiss heritage and functional specifications also keep the identity of the 1521 as a purpose-built dive watch.

At Gnomon Watches, the Squale 1521 PVD is available in several configurations, including rubber, tan leather, and black mesh options. Each version keeps the same PVD-finished case while offering a different look and feel on the wrist. A closer look at its design and specifications helps explain what sets the 1521 PVD apart from the conventional steel versions. For further details, you can explore the Squale watch review in the following sections.

Why Choose the Squale 1521 PVD?

The PVD finish gives the 1521 an all-black appearance that looks darker and more contemporary than the conventional steel versions. The signature case shape and overall dial layout remain characteristic of the 1521, while the matte black finish gives the watch a different visual presence. This allows the PVD version to keep the collection's established dive-watch character while offering a more modern look.

A quick comparison with the 1521 Classic highlights two different wrist presences. The Classic offers a clean, traditional look with its polished or satin-finished stainless steel, while the PVD version brings a darker, more contemporary character through its matte black finish. The choice is between the conventional steel look of the Classic and the understated all-black appearance of the PVD model.

The PVD model suits those who are drawn to an all-black dive watch. For a different look, the 1521 PVD Leather pairs the matte black case with a tan leather strap, adding a warm contrast to the otherwise monochromatic design. Together, these configurations show how the same PVD case can take on a different character depending on the strap.

Read also: 8 Top Squale Dive Watch Recommendations for Your Next Dive

Squale 1521 PVD: Features in Detail

Looking at the specifications of the 1521 PVD gives a closer view of its case construction, dial, bezel, movement, and water resistance. The 1521 PVD combines its characteristic case design with a 500-meter water resistance rating and a 12.5mm case thickness. Its specifications cover the key elements expected of a dive watch, including dial legibility, a unidirectional bezel, water resistance, and a mechanical movement.

A Case Cut for Deep Water Comfort

The 1521 PVD case measures 41mm in diameter, 48mm from lug to lug, and 12.5mm thick. Made from 316L stainless steel, the case has a matte black PVD coating that gives the watch its distinctive appearance. The curved lugs and the crown at 4 o'clock are defining elements of the 1521 case design and contribute to its recognizable profile.

Matte Black Dial and High-Contrast Hands 

The matte black dial provides a dark background for the contrasting hour markers and hands, supporting clear time reading. The orange minute hand stands out against the black dial and is easy to tell apart from the other hands. A date window at 3 o'clock adds everyday functionality without significantly changing the overall dial layout.

120-Click Unidirectional Bezel

The watch has a 120-click unidirectional bezel with a ridged edge for setting elapsed dive time. Its black bezel insert has 60-minute markings and a luminous marker at the zero position for better visibility in low light. Because the bezel turns in one direction only, an accidental bump would not make the remaining dive time look longer than it is.

Crystal Clarity with Flat Sapphire Glass

Protecting the dial is a flat sapphire crystal with high scratch resistance. It has an anti-reflective coating on the interior surface to reduce unwanted reflections underwater or in bright light. The coating helps improve dial visibility in bright or underwater conditions.

Super-LumiNova for Low-Light Legibility

The hands and dial markers are filled with Swiss Super-LumiNova to improve legibility in low light. The luminous material glows after exposure to light, helping the key elements of the dial stay visible when ambient light is limited. The contrast between the white hour markers and orange minute hand also makes quick time checks easier.

Swiss Workhorse Automatic Movement

Inside the black PVD case is the Swiss-made Sellita SW200-1 automatic movement, running at 28,800 vibrations per hour. Known in the watch industry for its dependability and easy servicing, this caliber has 26 jewels, hacking seconds, and manual winding. It provides approximately 38 hours of power reserve, which suits a daily wear watch.

Read also: Squale Matic S Review: A Versatile Evolution of the Squale Dive Watch

Engineering 500 Meters of Water Resistance

Despite its 12.5mm thickness, the 1521 PVD has a 500-meter water resistance rating, equivalent to 50 atmospheres. The watch reaches this rating through Squale's case construction, without an external helium escape valve. The screw-in crown and screw-in caseback help keep out moisture and grit and support the watch's pressure rating.

Strap Choices for the 1521 PVD

The 1521 PVD is available at Gnomon Watches in three strap configurations: black rubber, tan leather, and black mesh. While each version shares the same matte black PVD case, the different strap materials create different looks and wearing options.

The 1521 PVD (Rubber) variant comes with a black rubber strap that complements the matte black case. The rubber strap suits the watch's dive-oriented design and is a straightforward option for those who prefer a practical, monochromatic look. Its matching black hardware also keeps the overall appearance consistent with the PVD case. 

The 1521 PVD Leather edition pairs the matte black case with a tan leather strap, creating a stronger contrast than the rubber configuration. The warm leather tone adds a vintage-inspired touch while keeping the distinctive PVD case. A matching black buckle completes the darker visual theme. 

The 1521 PVD Black Mesh comes with a black PVD-treated stainless steel Milanese mesh bracelet that complements the case. Its mesh construction adds a more metallic appearance while reinforcing the 1521's connection to classic skin diver styling. The bracelet is secured with a deployant clasp for a clean finish on the wrist. 

Final Thought

The Squale 1521 PVD combines the collection's established skin diver heritage with a matte black PVD finish. Its 500-meter water resistance, sapphire crystal, Sellita SW200-1 automatic movement, and distinctive 1521 case give it the specifications of a modern dive watch, while the rubber, leather, and black mesh configurations offer different approaches to the same design. For enthusiasts who appreciate the classic 1521 silhouette but prefer a darker appearance, the PVD version offers a contemporary interpretation of Squale's long-running dive watch design.

Read also: 7 Impressive Squale Watches That Should be Under Your Radar