Model: Seiko HAQ “The Great Blue” Perpetual Calendar GMT (8F56)
Overview: A highly collectible JDM Seiko HAQ (High Accuracy Quartz) reference, “The Great Blue” is powered by the 8F56 perpetual calendar GMT movement. It features a dual-time function and Seiko’s signature perpetual calendar system, presented on a distinctive blue globe dial with a yellow gmt hand, bi-directional GMT bezel controlled via the left crown.
History: Released within Seiko’s late-1990s to early-2000s HAQ lineup, “The Great Blue” series represented the brand’s pinnacle of quartz engineering at the time. This specific configuration is considered the most desirable variant due to its sculpted case design, yellow GMT hand, and globe-themed dial execution. It was produced in limited JDM quantities, with both perpetual and non-perpetual variants existing within the broader family.
Specifications and Condition:
Overall: Great Condition
Case: Great Condition
Crystal: Clean
Dial: Serviced
Movement: Serviced
Bracelet/Strap: Original stock bracelet
Includes: Naked
Movement: Seiko 8F56 HAQ (High Accuracy Quartz)
Perpetual calendar (pre-programmed date system, no manual adjustment under normal conditions)
GMT function with 24-hour hand
Bi-directional inner GMT bezel controlled via left crown
Independent hour adjustment capability for travel time changes
Dimensions:
Approx. 38mm diameter
20mm lug width
12mm thickness
Design Details:
Blue globe dial representing world/time theme
Yellow GMT hand for clear secondary time indication
Bi-directional inner GMT bezel (controlled via left crown)
Curved case architecture unique to this reference
Balanced sport-dress hybrid profile
Strong JDM HAQ design identity with technical aesthetic focus
Highly legible multi-time zone layout with layered dial depth
Closing Note: “The Great Blue” stands as one of the most sought-after executions within Seiko’s HAQ catalog, combining technical precision with a highly distinctive design language. Its perpetual calendar GMT functionality, globe dial, and unusual crown-operated bezel system make it a standout piece within Seiko’s quartz heritage and a true collector-focused reference.
