Seiko asked watch fans to pick its next Prospex diver from four designs. Their choice wasn’t the usual black or navy: it was a bright, tropical-blue take on the brand’s 1965-inspired dive watch. Now that winning design is a real watch, limited to 4,500 pieces worldwide.

The new Prospex HBC011 costs $1,400 in the U.S. and pairs a turquoise-blue dial and matching bezel with Seiko’s 1965 Heritage Diver case. Its color is the immediate draw, but the fan vote is what makes this release different from another limited-edition dial swap.

The Design Seiko Fans Picked

Seiko held the vote in July 2025 as part of its diver’s watch 60th-anniversary celebration. Fans could choose among four designs inspired by the sea at different times of day: sunrise, daytime, late afternoon and sunset. The winner was “Daytime Blue,” intended to evoke sunlit water.

Seiko gave the winner a wave-patterned dial and blue bezel. The pattern has a bit of history itself: it draws on the wave emblem associated with Seiko divers, which appeared on the caseback of the brand’s 1975 titanium 600-meter saturation diver.

A Bright Dial on a Serious Dive Watch

Underneath the color is a fairly restrained package: a 40mm stainless-steel case, 13mm thickness and 46.4mm lug-to-lug length. You also get 300 meters of water resistance, a curved sapphire crystal, a screw-down crown and luminous hands, hour markers and bezel markings. The bracelet clasp has a sliding adjustment, a welcome detail when your wrist expands in the heat.

Its connection to 1965 isn’t just marketing decoration. Seiko introduced Japan’s first diver’s watch that year, a self-winding model rated to 150 meters. The HBC011 borrows the look of that early design while doubling the original water-resistance rating and adding modern materials and hardware.

The Catch Is Inside

Seiko’s automatic 6R55 movement gives the watch a useful 72-hour power reserve, enough to put it aside for a couple of days without immediately needing to reset it. But Seiko rates its accuracy at +25 to -15 seconds a day. That’s a wide stated tolerance for a $1,400 watch, even if your particular example runs better.

The HBC011 is available through select Seiko retailers beginning in October 2026. Each of the 4,500 watches has an individual number engraved on its caseback. If the color appeals to you, that limited run is worth noting; it isn’t, on its own, a reason to rush a purchase.

We haven’t handled the HBC011 in person, so we can’t vouch for how the dial looks outside Seiko’s photos or how the bracelet wears over a full day. On paper, though, this is a familiar, capable Seiko diver with something unusual behind its design: the people who wanted it got to choose what it looked like.

Sources: Seiko’s announcement; official HBC011 specifications; Seiko diver’s watch history.