Seiko Prospex Diver Scuba HBB001J 145th Anniversary Limited Edition

High-end JDM (Japanese Domestic Market) Limited Edition. This model commemorates the 145th anniversary of Seiko’s founding. It is inspired by the iconic “Seiko Blue,” a color that has symbolized “innovation” and “challenge” since the 1960s. A professional diving watch that combines a silver-white dial with a highly sophisticated two-tone bezel.

Exclusive Global Availability: Limited edition of 9,999 units worldwide (with only 1,500 allocated to the Japanese domestic market).

Highlights

• “Sharp & Compact” Case Design: It inherits the classic angular and faceted lines of Seiko divers, but with a more compact, streamlined, and modern geometry for the wrist.
• “Seiko Blue” Two-Tone Bezel: A two-tone bezel insert that, together with the blue seconds hand, provides a sporty and elegant contrast against the silver-white dial.
• Special Edition Details: Screw-down case back engraved with the inscription “LIMITED EDITION” and corresponding serial number.
• High-Quality Solid Bracelet: Solid stainless steel links with polished bevels that integrate perfectly with the straight lines of the case.

Technical Specifications

Feature Detail

Reference HBB001J (JDM Exclusive)

Collection Prospex Diver Scuba

Movement Automatic Mechanical, Caliber 4R35 (Japanese Manufacture)

Winding Options Supports manual winding (hand-winding) and hacking (hacking)

Dimensions 41.7 mm (Width) × 49.5 mm (Length/Lug-to-Lug) × 12.3 mm (Thickness)

Weight 170.0 g

Case Material High-strength stainless steel

Bracelet Solid stainless steel with one-touch double-lock safety clasp and diving suit extension

Crystal Hardlex (Seiko’s hardened mineral glass)

Luminescence High-intensity Lumibrite on hands, hour markers, and bezel reference point

Water Resistance 200 m / 20 bar (ISO certification for air diving / Diver's)

Magnetic Resistance Yes (Anti-magnetic)

Caliber Performance and Functions

• Seiko Caliber 4R35: A reliable automatic movement with proven robustness, equipped with 23 jewels.
• Power Reserve: Approximately 41 hours of runtime when fully wound.
• Factory Accuracy: Daily tolerance of +45 to -35 seconds (in a static state without use).
• Complication: Calendar window (date) located at 4:30 to avoid interfering with the symmetry of the hour markers.

Safety and Construction Features

• B Unidirectional Rotating Bezel: Precisely designed to prevent accidental rotation while measuring dive time.
• Screw-lock Crown: Strategically positioned at 4 o’clock to prevent it from digging into the wrist and ensure maximum water resistance.
• Screw-back Case Back: Ensures an optimal watertight seal and protects the movement from hydrostatic pressure.