Seiko Fans Choose Daytime Blue for 1965 Heritage Diver HBC011
Seiko will put a fan-chosen colorway of its 1965 Heritage Diver into production this autumn. According to Hodinkee, the Prospex HBC011 uses a “Daytime Blue” dial selected through a public vote held for the 60th anniversary of the original 62MAS, and it is scheduled to reach Seiko channels in October 2026 at $1,400, limited to 4,500 pieces worldwide.
The vote is the story as much as the watch. Last summer Seiko showed four ocean-inspired palettes—bright yellow, deep green, orange-red and tropical blue—and let the audience pick the one that would actually ship. Blue won. The other three remain unreleased, though the brand has already designed and photographed them.
What the HBC011 Actually Is
The case and movement are not new. According to Hodinkee, the HBC011 shares its specification with the 2024 “20MAS” generation of the SPB lineup, including the 6R55 automatic. Seiko lists the steel case at 40.0 mm wide, 13.0 mm thick and 46.6 mm lug-to-lug, with 300 metres of water resistance. Independent measurement of related SPB451/SPB453 models put width at 40.2 mm and thickness at 13.4 mm.
| Spec | HBC011 |
|---|---|
| Reference | HBC011 (Prospex 1965 Heritage Diver Fan-Selected LE) |
| Dial | Daytime Blue, wave texture from SPB511 |
| Movement | 6R55 automatic, 24 jewels, 21,600 vph |
| Power reserve | 72 hours |
| Accuracy | −15 to +25 seconds per day |
| Date | 4:30 position |
| Bracelet | Three-link steel, on-the-fly micro-adjust clasp |
| Edition size | 4,500 pieces |
| Price / availability | $1,400 / October 2026 |
The wave-pattern dial and the micro-adjust clasp first appeared on last year’s SPB511 limited edition, which used a ghost bezel. The HBC011 keeps that dial architecture and applies the winning blue. Lume sits on hands, markers and the 12 o’clock pip. Builders who swap crystals or bezels on Prospex platforms will recognise the same dimensional family covered in the Seiko Prospex mod guide.
Why a Public Vote Matters for a Core Diver
The 1965 diver format has become one of Seiko’s most iterated commercial platforms. The jump from SPB143 to SPB451 was a hardware refresh; the HBC011 is a marketing refresh on that hardware. Involving fans in the colour decision is inexpensive relative to a new calibre, and it generates months of discussion before a single unit ships.
It also locks a colour that is already over-represented in dive-watch catalogues. Yellow, green and orange-red would have been more distinctive on the secondary market. Seiko has not said whether those rejected options will appear later as separate limited runs.
For the aftermarket, a 4,500-piece run is large enough that parts—bezels, inserts, crystals—will eventually circulate, but small enough that original Daytime Blue dials will stay scarce. Anyone planning lume or crystal work on related 40 mm Prospex cases can start from the same compatibility logic used in the lume upgrade guide.
FAQ
Is the HBC011 a new movement?
No. According to Hodinkee, it uses the existing 6R55 with 72 hours of reserve and a 4:30 date, the same calibre as the 2024 SPB “20MAS” generation.
When does it go on sale?
October 2026 through standard Seiko channels, priced at $1,400, limited to 4,500 pieces.
Will Seiko release the losing colours?
The brand has not announced production of the yellow, green or orange-red concepts shown in the 2025 vote.
According to Hodinkee’s August 28, 2026 report, the HBC011 is less a technical leap than a confirmation that Seiko now treats its core diver as a conversation with its audience, not only a catalogue SKU.