Citizen Promaster Aqualand 40th Anniversary: A Revolutionary Dive Watch

Citizen Promaster Aqualand 40th Anniversary Limited Edition: A Dive Watch Revolution

 

The Citizen Promaster Aqualand 40th Anniversary Limited Edition is no ordinary dive watch. Since its introduction in 1985, it has been a staple among professional divers, offering one of the most groundbreaking features in dive watch history: an electronic depth sensor. This innovation allowed divers to track their underwater depth in real time, making the Aqualand a trusted tool for those pushing the limits beneath the waves.

Fast forward to 2025, and Citizen has reintroduced the Aqualand in a limited edition, celebrating the 40th anniversary of this iconic model. With only 5,800 pieces available globally, the Citizen Promaster Aqualand 40th Anniversary Limited Edition continues to combine the pioneering spirit of the original with updated materials and functions for today’s divers. For more details on Citizen's official release, you can visit their announcement here.

A Tribute to the Original: Design and Durability

 

While the technology inside the Citizen Promaster Aqualand 40th Anniversary is undeniably impressive, it’s the design that leaves an immediate impression. The watch's 50.7mm case diameter may seem imposing, but it's important to note that the true width, excluding the protruding depth sensor, is a more manageable 43.5mm. The asymmetrical design, originally intended to house the electronic depth gauge, still retains its bold character. This unique design ensures that the watch stands out on your wrist, without sacrificing practicality or comfort.

The Aqualand's stainless steel case has been finished in a matte gray with gold accents—an aesthetic choice that recalls the original model's classic two-tone design. The gold-plated bezel, crown, and pushers, all of which are essential for the watch’s functionality, now sparkle with a touch of elegance. This combination of luxury and utility is what makes the Aqualand so appealing.

But what really makes this model instantly recognizable is the depth sensor at the 9 o’clock position. This element, a hallmark of the Aqualand, measures the water pressure as the wearer submerges. The deeper you dive, the more pressure the sensor detects, and this is translated into a real-time digital depth readout displayed on the dial.

Functionality Beyond Timekeeping

 

When it comes to functionality, the Citizen Promaster Aqualand 40th Anniversary Limited Edition is more than just a pretty face. The digital subdial at 12 o’clock is one of its key features. On land, it acts as a multifunctional display, showing the date, chronograph timing, and alarm functions. But when submerged, this subdial transforms into a digital depth gauge, providing real-time depth measurements and a log of the deepest point reached, up to 260 feet.

The inclusion of an ascent rate alarm is another important feature. This alert warns the wearer if they are rising too quickly from deep water, helping to prevent the dangerous condition known as the bends. It’s a small but essential function for divers, ensuring safety during every dive.

Not just limited to its underwater capabilities, the Aqualand 40th Anniversary is also equipped with a chronograph that measures time with a precision of 1/1000th of a second. Whether you’re timing a dive or a non-diving activity, this feature makes the Aqualand versatile and functional in various situations.

Eco-Conscious Materials: A Sustainable Dive Companion

As part of Citizen’s ongoing commitment to sustainability, the strap of the Aqualand 40th Anniversary Limited Edition is made from BENEBiOL™ polyurethane—a plant-based material developed by Mitsubishi Chemical Corporation. Not only does this material offer excellent resistance to seawater and wear, but it also provides a more eco-friendly alternative to traditional rubber and silicone straps.

Despite being stiffer than silicone, the BENEBiOL strap offers superior durability and breathability, making it an ideal choice for divers. The strap is designed to be worn over a dive suit, with an extension system that ensures comfort during prolonged dives.

A Collector’s Piece: Limited Edition and Value

 

The Citizen Promaster Aqualand 40th Anniversary Limited Edition stands as a testament to Citizen’s dedication to innovation and craftsmanship. With a price tag of $595, this model offers excellent value for those seeking a professional-grade dive watch with advanced functionality and a rich legacy. Only 5,800 pieces are available worldwide, making it a highly collectible item for both dive watch enthusiasts and casual collectors. For an in-depth introduction to the Aqualand, visit Time and Tide Watches.

This limited edition model blends nostalgia with cutting-edge technology, ensuring that the Aqualand continues to be relevant to today’s divers while preserving its iconic legacy.

Availability and Final Thoughts

Scheduled for release in July 2025, the Citizen Promaster Aqualand 40th Anniversary Limited Edition is a must-have for collectors, divers, and watch enthusiasts alike. Whether you’re drawn to its groundbreaking technology, bold design, or environmental consciousness, the Aqualand remains a standout piece in the world of dive watches. As Citizen celebrates 40 years of innovation, this limited edition reissue reminds us of how far we’ve come and how much further we can go, both above and below the surface.