The Casio G-SHOCK GW-BX5600CBG-2 is an Earth Day special edition built around the classic square 5600 silhouette, with a sustainability story running through every part of it. Discarded fishing nets — one of the largest contributors to marine pollution — are processed and repurposed into the watch’s cloth band, while the case and bezel are moulded from bio-based resin. The dark navy face and chunky bezel keep the look familiar to anyone who has worn a square G-SHOCK, while the patterned blue strap quietly tells a different story.
At 49.1 × 44.1 × 13.4 mm and just 55 grams on the wrist, this is one of the lightest squares Casio has released, and the cloth band adds to the relaxed, easygoing fit. The recycled fabric is woven to recall the texture of an open net, and because of how it is produced no two bands are quite the same. A traditional buckle with dual keeper holds it in place, and beneath the resin exterior the watch retains the full shock-resistant structure and 20 bar (200-metre) water resistance the line is known for. A mineral crystal protects the display.
The face is an inverted (negative) high-contrast MIP LCD with a wide viewing angle, offering four selectable TIME MODE layouts and two main display fonts — STANDARD for clarity or CLASSIC for the segmented 7-segment look that nods to the original square. Tough Solar keeps the watch running entirely on light, while Multi-Band 6 reception draws time signals from six transmitters worldwide and Bluetooth Smartphone Link handles automatic time adjustment, world time and other settings through the CASIO WATCHES app. World time covers 38 time zones (55 cities plus UTC), supported by a 1/100-second stopwatch, countdown timer, five daily alarms and a full auto-calendar to the year 2099.
The watch arrives in dedicated packaging made of recycled materials, with a small cloth pouch included for everyday storage. For anyone drawn to the classic square G-SHOCK and the thinking behind a more sustainable build, the GW-BX5600CBG-2 is a quietly considered special edition that wears as easily as it reads.
Module Number: 3578
Movement Type: Tough Solar (solar-powered quartz)
Precision: ±15 seconds per month (with no signal calibration or mobile link)
Battery operating time: Approx. 6 months on full charge with normal use; approx. 22 months in total darkness with power-save function on
Weight: 55 g
Water Resistance: 20 bar (200-metre water resistance)
Case Material: Resin / bio-based resin
Case Size (Length × Width × Thickness): 49.1 × 44.1 × 13.4 mm
Crystal: Mineral glass
Band: Cloth band made with recycled material from discarded fishing nets
Clasp: Buckle with dual keeper
Display: High-contrast inverted (negative) MIP LCD with wide viewing angle; four selectable TIME MODE layouts; STANDARD and CLASSIC font options via app
Backlight: Full-auto LED backlight with afterglow (selectable 1.5 or 3 seconds)
Calendar: Full auto-calendar (to year 2099)
Time Calibration: Multi-Band 6 radio reception (DCF77 Germany, MSF England, WWVB USA, JJY Japan, BPC China)
Smartphone Link: Bluetooth wireless linking via CASIO WATCHES app
World Time: 38 time zones (55 cities + coordinated universal time), home/world city swap, auto DST switching
Stopwatch: 1/100-second stopwatch
Timer: Countdown timer (1 second to 24 hours)
Alarms: 5 daily alarms with snooze, hourly time signal
Other features: Shock-resistant structure, power saving, 12/24-hour format, special packaging in recycled materials with cloth pouch
Regular timekeeping: Hour, minute, second, pm, month, date, day
