Seiko has added something unusual to its Prospex collection — a watch with a design chosen by the brand’s fan community. The new 1965 Heritage Diver’s Watch Fan-Selected Limited Edition HBC011 takes the modern interpretation of Seiko’s first diver and gives it a vibrant blue treatment, following a global fan vote held last year. Limited to 4,500 individually numbered pieces, this 40 × 46.4 × 13mm watch offers 300m water resistance and houses Seiko’s automatic caliber 6R55. It will be available from October 2026 for €1,550 / US$1,400 / £1,350.

The story behind the HBC011 began during Seiko’s 60th-anniversary celebrations for its first diver in 2025. From July 1st to 31st, Seiko invited its global Prospex community to choose between four designs inspired by the changing colors of the sea throughout the day — Sunrise Orange, Daytime Blue, Late Afternoon Green, and Sunset Red. The campaign took place online and through events, with Daytime Blue receiving the most votes. Seiko then turned the winning concept into the HBC011, giving this otherwise familiar Prospex diver a slightly different kind of provenance: its final color scheme was not decided only by Seiko’s designers but also by the people who buy, collect, and obsess over the brand’s watches. More on that in a bit.

The 1965 Diver gets a fan-selected makeover

The watch at the center of the story is Seiko’s current 1965 Heritage Diver’s Watch, a collection that traces its design back to the 1965 Diver, better known among collectors as the 62MAS. The original was Seiko’s first diver’s watch and offered 150m water resistance, establishing the foundation for a family of watches that would eventually become a major part of the brand’s identity. Seiko also highlights the original watch’s use during Japanese research expeditions to Antarctica in the 1960s. Sixty years on, the 62MAS has become one of the most recognisable shapes in Seiko’s catalog, and the company has returned to it repeatedly in modern Prospex watches. The HBC011 does not attempt to reproduce the original in every detail. Instead, it uses the familiar case architecture and proportions as a starting point, adding the winning design concept from the 2025 fan vote.

That means the fundamentals remain in line with the contemporary Prospex formula. The HBC011 has a stainless steel case with a 40mm diameter, 46.4mm lug-to-lug, and 13mm profile. Its 300m water resistance puts it firmly in professional-dive-watch territory, while the screw-down crown, screw-in case back, unidirectional bezel, and sapphire crystal reinforce that purpose. The curved crystal has an antireflective coating on the inner surface, and the hands, hour markers, and bezel all contain Lumibrite. The watch comes on a stainless steel bracelet with Seiko’s slide-adjust clasp, providing a 15mm total adjustment range. In other words, while the community could decide how the watch should look, the resulting HBC011 remains a serious Prospex diver rather than a special edition built primarily around its story.

A familiar diver with a new palette

The obvious change here is the color. Daytime Blue covers both the dial and bezel, with Seiko describing the shade as inspired by the sea under daylight. Leaning toward turquoise, it is much brighter than the more restrained blues we often see on dive watches. The dial also carries an embossed wave pattern, linking the watch to Seiko’s broader history of maritime design. The motif traces back to the wave symbol used on the case backs of Seiko divers, including the 1975 Professional Diver’s 600m, the world’s first diver’s watch with a titanium case. Seiko subsequently brought the wave motif onto the dials of two of its 60th-anniversary limited editions, and it now appears here as part of the fan-selected design. The result is a watch that is recognisably the 1965 Heritage Diver, but with considerably more color on the wrist.

Inside is Seiko’s caliber 6R55. This 24-jewel automatic movement offers manual winding, hacking seconds, a 21,600vph frequency, and a 72-hour power reserve. Seiko rates its accuracy at +25/-15 seconds per day. This movement is more about providing the practical autonomy expected from a modern everyday mechanical watch than chasing chronometric excellence. The combination of the 40mm case, three-day power reserve, and 300m water resistance also makes the HBC011 a fairly straightforward proposition beyond the fan-vote story. It is a watch designed to be worn rather than simply displayed, as evidence of Seiko’s relationship with its community. The blue dial may be the reason this particular reference exists, but the rest of the package is recognizably the same capable Prospex platform that has made the 1965 Heritage Diver such a persistent part of Seiko’s modern catalog.

Final thoughts

Now, here’s the interesting part. I think Seiko has stumbled onto a surprisingly “revealing” experiment. We spend lots of time as enthusiasts demanding that brands be more adventurous, more original, and less predictable. Yet, when Seiko gave its community four genuinely different color concepts and asked which one should become a watch, the winner was blue. It wasn’t orange, which would’ve been the obvious extrovert choice, and which I’m seeing a lot lately. It wasn’t red either, which would’ve been considerably louder or more elegant, depending on the context. And it wasn’t green, despite the color’s enormous popularity across the industry. Blue. The most familiar option, and arguably the one easiest to imagine wearing every day. There’s something almost hilariously predictable about it, but that’s not an insult. If anything, it highlights the difference between what enthusiasts say they want and what they actually want to own.

It also makes the HBC011 more interesting than other limited-edition 62MAS interpretations. Seiko did not hand the keys to its design department over to the internet, nor did it ask its audience to reinvent one of its most important historical watches. It simply gave enthusiasts a choice and followed through on the result. That is probably the right level of involvement. The 1965 Diver remains Seiko’s canvas, but this time, its audience got to pick the paint. And while €1,550 is certainly not pocket change for a Prospex, the HBC011 has something another blue Seiko diver cannot quite replicate — a little piece of collective provenance. Thousands of enthusiasts effectively said, “That’s the one,” and Seiko listened. Maybe democracy in watchmaking isn’t about getting something completely unexpected. Maybe it is simply about getting the watch we already knew we wanted, together. Sounds cute, right?

What do you guys think of the Seiko Prospex 1965 Heritage Diver’s Watch Fan-Selected Limited Edition HBC011? Do you think more watch brands ought to do this? What would you have chosen? Dear friends, let’s chat!