✦ WristBuzz Exclusive · Limited Edition

Limited Edition Seiko Turtle HBB002: PADI's 60th in Sunburst Blue

Seiko's Prospex Turtle HBB002 marks PADI's 60th anniversary. Electric sunburst blue dial, ceramic bezel insert, 200m water resistance, an 8,000-piece run, and a €750 price tag that puts it squarely in the impulse-buy bracket for a real diver.

By the WristBuzz team Published June 11, 2026 5 min read
Seiko Prospex Turtle HBB002 PADI 60th Anniversary with electric sunburst blue dial and ceramic bezel
The Seiko Prospex Turtle HBB002 in its full sunburst-blue glory, with the globe motif on the dial and a ceramic bezel. Source: Fratello Watches.

Some collaborations need explaining. Seiko and PADI is not one of them. Seiko has been making real dive watches since the 1960s. PADI has been certifying actual divers since 1966. Their ten-year formal partnership now lines up with PADI's sixtieth anniversary, and the watch Seiko has built to mark it is the Prospex Turtle HBB002: a limited edition that takes the most-loved Seiko diver shape, paints it in electric blue, and prints a globe across the dial.

It is €750. It is a real 200m diver. It comes in a run of 8,000. None of those numbers feel out of place next to each other, which is exactly why this watch will sell out.

The watch, by the numbers

Reference
HBB002
Limited to 8,000 pieces worldwide. Available from July 2026.
Case
45mm cushion
Stainless steel, 13.2mm thick, 47.7mm lug-to-lug. Ceramic bezel insert (not aluminium).
Movement
Caliber 4R36
Automatic, 21,600 vph, 24 jewels, 41-hour power reserve. Hand-winding and hacking.
Water resistance · Price
200m · €750
Comes with an Oyster-style steel bracelet and a high-strength silicone strap.

The Turtle nickname comes from the cushion-shape case of the 1976 reference 6309 that this design directly descends from. Modern Turtles wear smaller than 45mm suggests because the case curves to the wrist and the lug-to-lug is closer to a 42mm conventional diver. If you have ever tried an SRP777 or SRPE05, you know how the HBB002 will feel.

About that dial

Close-up of the Seiko Turtle HBB002 dial showing the globe motif and PADI 60th Anniversary lettering
The dial picks up PADI's anniversary blue and red, with a globe spread across the centre. The "PADI Sixtieth Anniversary" lettering sits at 9 o'clock. Source: Monochrome.

The dial is the centrepiece. Electric sunburst blue (a deeper, more saturated tone than the standard Padi blue) with a globe motif printed in faint relief. The seconds hand and the minute markers around the ceramic bezel carry the PADI red accent, which keeps the watch from reading as a one-trick blue piece. There is a "PADI Sixtieth Anniversary" line at 9 o'clock instead of the usual "Diver's 200m" text. The date sits at 4:30 (Turtle hallmark) and the day window has been removed for cleaner reading.

The ceramic bezel is the upgrade worth flagging. Earlier Turtle PADI editions used aluminium. Ceramic resists scratching and fading, and gives the colour the depth that aluminium never quite delivers under sunlight. For €750 with a ceramic bezel and a 4R36 movement, the spec-to-price ratio is loud.

What it's not

Set expectations
This is a 4R36 watch. The movement is reliable, hacks and hand-winds, but it does not chase chronometer accuracy. Expect ± 15 seconds per day in normal wear. If you need COSC-grade precision, this is the wrong watch. If you need a real diver you can wear to the pool without worrying about it, the 4R36 is more than enough.

The HBB002 is also not a small watch. 45mm is the Turtle case, and that case is part of the appeal. If you wear under a 6.25-inch wrist, try one on first. The cushion shape is forgiving, but it does have a presence.

Where it lands in the Prospex line

Seiko has three "diver" sizes that matter right now: the 40mm SPB143-style modern diver (compact, in-house, ~€1,200), the 44mm Monster (chunky, fun, ~€500), and the 45mm Turtle. The Turtle is the line's heritage shape, the one that traces directly to the 6309 of 1976, and Seiko keeps it alive with collaborations like this one. Each Turtle limited edition is, in effect, a way for collectors who already have the basic SRP777 to acquire a more interesting version of the same watch.

The HBB002 sits comfortably between the standard PADI Turtle (€650, aluminium bezel) and the higher-tier in-house Prospex line (€1,500-plus). For the price difference over the standard PADI, you get ceramic, the globe dial, the anniversary engraving, and an 8,000-piece limited number. That is the entire pitch, and it is enough.

Bottom line

If you have been thinking about a real-deal Seiko diver and the colour scheme is to your taste, the HBB002 is a clean buy. Ceramic bezel, 200m water resistance, the modern Turtle wear, and a dial that hits the anniversary brief without being kitsch. 8,000 pieces is not tiny, but it will move quickly through the markets that care about PADI collaborations: Japan, Singapore, Australia, the US west coast.

Land on it before July if you can. The earlier PADI Turtles all sit firmly above retail on the secondary market within twelve months. There is no reason this one will not do the same.

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