Seiko's Turtle is one of the most recognizable dive watch silhouettes in production. The asymmetric 45mm cushion case with its signature crown shoulder at 4 o'clock has been in the Prospex lineup since 1976, and it occupies a specific position: more personality than the SPB series, more affordable than the SLA tier, distinct enough that people who do not wear dive watches every day still understand it as serious.
The new HBB002 PADI 60th Anniversary marks two milestones simultaneously: PADI's 60th year and a decade of the Seiko-PADI partnership. Available in July 2026 at $750, limited to 8,000 pieces.
The honest read follows.
Images in this post are AI-generated for editorial illustration. They may not represent the exact watch configuration. For accurate product photography, visit seikowatches.com.
Seiko Prospex PADI 60th Anniversary HBB002, Calibre 4R36, 45mm, $750. Limited to 8,000 pieces, available July 2026. AI-generated editorial image.
The Turtle Platform
Before getting to the anniversary details: the Turtle case deserves context for buyers new to it.
The 45mm dimension sounds large, but the cushion shape and sloped crown guard mean it wears closer to a 42mm round case on wrist. The 4 o'clock crown position keeps the crown from digging into the back of the hand. 200m water resistance with screw-down crown and solid caseback. Unidirectional rotating bezel. Sapphire crystal with anti-reflective coating. These are real dive watch specs.
The Turtle is built to the ISO 6425 diver's watch standard — the same certification that covers Rolex and Tudor dive watches. At $750 retail and $400–$600 pre-owned, it is the most affordable ISO-certified Japanese dive watch with sapphire crystal in Seiko's current lineup.
The HBB002 Specifically
The anniversary dial translates PADI's 60th anniversary logo — a red diver silhouette against a blue globe — into a sunburst blue dial with a subtle globe motif across the surface. Red turns up on the central seconds hand tip and the "Diver's 200m" text at 6 o'clock. Ceramic bezel insert in PADI blue. Stainless steel bracelet plus a black silicone strap printed with the full PADI name.
The movement is Seiko's Calibre 4R36: 21,600 vph, 41-hour power reserve, 24 jewels, manual winding and hacking. Worth flagging clearly: the 4R36 is the same calibre found in Seiko watches selling for $300. At $750, buyers are paying for the Turtle case, the sapphire crystal, the ceramic bezel, the limited edition dial, and the PADI co-branding — not for a premium movement.
That is not unusual for Seiko limited editions. The King Turtle's value has always been the platform and the design. Compared to Swiss limited editions at this price tier — where ceramic bezels and sapphire crystals are rare below $1,500 — the HBB002 still delivers a strong specification package.
The Turtle's natural setting. Built to ISO 6425 diver's standard — the same certification covering Rolex and Tudor dive watches. AI-generated editorial image.
The Limited Edition Math
8,000 pieces is a controlled run for Seiko — the brand has done much larger editions. For buyers tracking the secondary market: previous PADI Turtle limited editions have held their value better than standard production Turtles, occasionally trading at modest premiums in the 12–18 months after release.
This edition benefits from the dual-anniversary hook — PADI's 60th is meaningful to the diving community — and the PADI partnership has a genuine audience beyond watch collectors. Dive instructors and certified divers who wear watches in the water represent a real buyer pool at $750.
Pre-owned prices on PADI Turtle variants typically settle $50–$150 below retail once initial demand absorbs. If you want one, buying new at retail is the correct play — the pre-owned market will not offer a meaningful discount for 12–18 months.
The Turtle in context. Designed to be worn in the water, not looked at in a case. AI-generated editorial image.
Who This Is For
Divers who also collect watches. If you are PADI-certified and want a watch that marks the organisation's 60th anniversary, this is the obvious choice. The platform is genuinely dive-capable.
Entry-level Seiko collectors building a Turtle reference run. The Turtle variant spectrum — PADI, Pepsi, Emperor Scorpion, military green — has collector appeal. The HBB002 is the current release to add.
Buyers new to Seiko Prospex. If you read the Seiko Prospex gateway post and want something with a specific story rather than a generic dial, the HBB002 offers it at the same price tier as a standard King Turtle.
The honest caveat: if your primary concern is movement quality per dollar, the 4R36 at $750 is not the answer. An SPB in the 6R35 tier for $350–$450 pre-owned delivers a better movement in a slightly different case for less money.
PADI HBB002 versus standard King Turtle SPB production. Same case, different movement tier and dial story. AI-generated editorial image.
The Dial Is the Point
What is not replicable pre-owned at $750: the globe motif dial, the PADI 60th anniversary specific colourway, and the ceramic bezel in this exact blue. When the HBB002 sells out in July it is gone.
If you want it, move early in July. The Seiko Prospex buying guide has the full hierarchy context and pre-owned pricing for the wider range.
The globe motif across the sunburst blue dial. Only on the HBB002 — standard Turtle production does not use this dial. AI-generated editorial image.