CASIO
G-SHOCK GM5600RH-1 : RUI HACHIMURA SIGNATURE MODEL
G-SHOCK GM5600RH-1 : RUI HACHIMURA SIGNATURE MODEL
Casio G-SHOCK – Model GM5600RH-1
Rui Hachimura Signature Model – The Black Samurai Edition
G-SHOCK and Rui Hachimura reunite for their fifth signature collaboration with the GM5600RH-1. This special edition builds on the classic GM5600, featuring a bold ion-plated metal bezel and Rui’s signature “Black Samurai” branding. With a powerful black and red color scheme, this watch reflects Hachimura’s strength, intensity, and journey as he continues to rise to new heights.
Design Overview
The GM5600RH-1 highlights Rui Hachimura’s personal identity and Japanese heritage. His exclusive “Black Samurai” logo—combining the kanji character 八 (hachi, meaning “eight”) with the image of a Japanese sword to form an “H” for Hachimura—adorns the dial and case back. His signature is also engraved on the band loop for an authentic personal touch.
The ion-plated bezel and metal components add refined texture, while the bio-based resin band emphasizes environmental consciousness. Packaged in a striking black-and-red presentation box, this model is both a high-performance timepiece and a collector’s edition.
Key Highlights
✔ Rui Hachimura Signature Model – 5th collaboration with G-SHOCK
✔ Distinctive GM5600 design with ion-plated metal bezel
✔ “Black Samurai” logo on dial and case back + Rui’s engraved signature
✔ Black & red color scheme with exclusive packaging
✔ Bio-based resin band for reduced environmental impact
✔ Rugged shock-resistant construction with 200M water resistance
Features & Specifications
Basic Information
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Case Size: 49.6 × 43.2 × 12.9 mm
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Weight: 80 g
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Case & Bezel Material: Resin / Stainless Steel (black ion-plated)
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Band: Bio-based Resin Band
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Construction: Shock Resistant
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Water Resistance: 200 meters
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Battery: CR2016
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Battery Life: Approx. 5 years
Exterior
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Glass: Mineral Glass
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Surface Treatment: Black ion-plated bezel
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Compatible Band Size: 145 – 215 mm
Watch Features
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Stopwatch: 1/100-second, measuring up to 23:59’59.99", elapsed/split/1st–2nd place times
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Countdown Timer: 1 second to 24 hours (1-second, 1-minute, and 1-hour increments), auto-repeat
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Alarm/Hourly Signal: Multi-function alarm + hourly time signal
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Flash Alert: Flashes with buzzer for alarms, hourly signals, countdown timer end
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Light: LED Backlight (Super Illuminator) with afterglow
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Light Color: White
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Calendar: Full auto-calendar (to year 2099)
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Format: 12/24-hour
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Regular Timekeeping: Hour, minute, second, pm, month, date, day
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Accuracy: ±15 seconds per month
About Rui Hachimura
Born February 8, 1998, in Toyama, Japan, Rui Hachimura rose to prominence in high school basketball before joining Gonzaga University in the U.S. A standout NCAA player, he won the Julius Erving Award in 2019 as the best small forward and became the first Japanese player selected in the first round of the NBA Draft. After beginning his NBA career with the Washington Wizards, Hachimura now plays for the Los Angeles Lakers, where his power and precision continue to inspire fans worldwide.
Summary
The Casio G-SHOCK GM5600RH-1 embodies Rui Hachimura’s warrior spirit, blending the toughness of G-SHOCK with refined Japanese design. Featuring the “Black Samurai” logo, ion-plated construction, and an exclusive collector’s package, this timepiece is a must-have for basketball fans, collectors, and anyone who values strength and style.
For more details, visit the official CASIO website here.
Warranty:
- The watch is covered by a warranty, providing assurance and protection for your purchase.
▶︎Processing Time & Shipping Policy
▶︎Refund policy
▶︎We only carry G-SHOCK USA products.
▶︎Unfortunately, we DO NOT ship internationally.
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Explore our current selection of G-SHOCK watches. If you don’t see your preferred model, check the G-SHOCK USA website, note the model number, and contact us via email or phone(415-567-2400) to place your order. Ask about our special deals!
Please note:
- We only carry G-SHOCK USA products.
- Unfortunately, we DO NOT ship internationally.

Trusted Since 1967
Our owner, Asuka Saito, is certified by both Gemological Institute of America (GIA) and Cultured Pearl Association of America (CPAA), and we also have a GIA-certified appraiser on staff. Asuka is also a color specialist, certified as a TC Color Therapist and Sensational Color.