Casio G-Shock GW-5600KJ-2 | ICERC collab | Clear Blue | Japan Import | Ultra Rare Vintage watch | Pre-owned

The Casio G-Shock GW-5600KJ-2 is an ICERC Japan special edition, released in June 2005 to support the International Cetacean Education Research Center. This limited model features a translucent blue resin case and strap with ocean-inspired details, symbolising the environmental themes central to ICERC collaborations.

It combines G-Shock’s classic square design with Tough Solar power and Wave Ceptor radio-controlled timekeeping for Japan and the USA regions. With its distinct ocean-blue colourway and limited production, it remains one of the most desirable early solar squares among collectors.

Condition: Pristine for its age. The case and strap show no notable wear and the display remains clean and fully functional. Ready to be worn or displayed. Watch only — no box or papers.
Release: June 2005
Model Code: GW-5600KJ-2
Special Edition: ICERC (International Cetacean Education Research Center)
Movement: Quartz (Module 2924)
Water Resistance: 200 m
Case Size: Approx. 48.9 × 42.8 × 13.4 mm
Weight: 53 g
Functions: Wave Ceptor (radio control for Japan/USA), Tough Solar charging, EL backlight, stopwatch, countdown timer, 5 alarms, full auto calendar, 12/24-hour format

All photos show the actual watch in stock. This is an authentic Japanese import already located in the UK — no import duties or customs delays for UK buyers.

Collector Insight
The GW-5600KJ-2 is an ultra-rare early Tough Solar model and one of the earliest ICERC editions to feature Wave Ceptor radio sync. Released nearly 20 years ago, it now qualifies as vintage, highly sought after for its clear blue case and limited domestic release. Well-preserved examples like this are increasingly difficult to find, especially in working order.