Our HydroLock MK2 buckle continues to set a new standard for style and functionality, now with enhanced features introduced in January 2025:

• 10% shorter in length, making it more compact and wearable.
• Dual push-button release replaces the foldover catch, offering a more user-friendly design for easier wear and removal.

This innovative buckle is professionally machined and assembled using 14 individual components, and proudly deep-etched with our ZULUDIVER logo as a hallmark of our quality.

But that's not all - we've designed the HydroLock buckle with your comfort in mind. With six micro-adjustment holes, you can achieve a perfectly tailored fit, guaranteeing maximum comfort for your wrist.

The top clasp measures 36mm in total length and 8mm thickness, this buckle is versatile, offering both form and function in one sleek package. Designed to allow 4mm thickness watch strap to be fitted and has a fully opened length of 100mm. Dive in with confidence, and let the HydroLock be your trusty companion on your next underwater expedition!

Available Finishes

Brushed and Polished: This finish combines a sleek, matte brushed surface with shiny polished edges and a recessed logo plate. It provides a balanced look that complements both modern and classic watch designs. This finish is ideal for those who appreciate subtle sophistication and it pairs well with brushed or mixed-finish watch cases, adding a touch of elegance without overpowering the overall aesthetic.

Full Mirror Polish: The full mirror polish finish is the epitome of luxury and refinement. With its high-gloss, reflective surface, this finish gives a sense of high-end craftsmanship. Perfect for formal or dress watches, it matches seamlessly with high-polish watch cases, creating a striking appearance.

Sandblasted: The sandblasted finish offers a unique, matte texture that stands out for its understated, rugged charm. It’s particularly suitable for tool watches or those with a sporty, utilitarian design. This finish complements matte or bead-blasted watch cases, providing a robust and cohesive look.

Black: Our PVD Black finish features a sleek, modern black coating applied through Physical Vapor Deposition (PVD) technology. This finish is ideal for contemporary watch designs and adds a bold, stylish edge to any watch. It pairs exceptionally well with black or dark-toned watch cases, enhancing the overall stealthy, sophisticated aesthetic.

Antique Bronze Effect: Our PVD Antique Bronze effect finish provides a distinctive, aged look that adds character and heritage. It’s perfect for vintage-inspired or heritage watches, giving them an authentic, timeless appeal. This finish pairs beautifully with bronze or similarly aged watch cases, enhancing the overall vintage vibe and adding a unique touch to your watch.

Polished Gold:The PVD Polished Gold finish brings a touch of opulence and vintage charm to your watch. With its rich, golden hue and polished surface, it’s perfect for watches designed to make a statement. This finish is a great match for gold-tone or gold-plated watch cases, offering a seamless and luxurious appearance that stands out.

Super-Luminova Logo: For an innovative twist, this finish features the deep-etched ZULUDIVER logo filled with Swiss-made Super-Luminova BGW9. The luminous material glows brilliantly in the dark, ensuring visibility and making it a functional and eye-catching choice for adventurous individuals or those who appreciate technical details in their watch accessories.

De-Branded: For a minimalist approach, this finish features no logo on the buckle, offering a clean and streamlined aesthetic. Ideal for those who prefer an understated look, this option ensures that the buckle seamlessly complements the overall design of your watch and strap.

Please note that our HydroLock deployant foldover clasp is not intended as a direct replacement for a standard pin buckle watch strap.