The Casio G-Shock 5600 series has long been a favorite among watch enthusiasts, known for its rugged durability and timeless design. Its latest iteration, the G-Shock GM5600RH-1, brings a fresh twist to this iconic timepiece through a collaboration with NBA star Rui Hachimura. This fifth signature model in their partnership blends Hachimura’s personal style with G-Shock’s legendary toughness, creating a watch that’s as striking as it is functional. With its bold black-and-red color scheme, unique “Black Samurai” logo, and a host of practical features, this limited-edition piece is making waves in the watch world.
A Design Rooted in Heritage and Strength
The GM5600RH-1 stands out immediately with its sleek, blacked-out aesthetic, accented by vibrant red details that reflect Hachimura’s dynamic energy on the basketball court. The watch is built on the foundation of the GM-5600 series, which upgrades the classic 5600 design with a metal-clad bezel featuring a black ion-plated (IP) finish. This gives the watch a refined, modern look while maintaining the rugged durability G-Shock is known for. Measuring 49.6 x 43.2 x 12.9 mm and weighing just 80 grams, it’s compact yet substantial, perfect for everyday wear or intense activities.
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What truly sets this watch apart is Hachimura’s personal touch. His “Black Samurai” logo, a clever fusion of the Japanese kanji character for “eight” (hachi) and a katana sword forming an “H” for his last initial, is prominently displayed at the top of the watch face and etched on the caseback. This logo not only ties the watch to Hachimura’s identity but also pays homage to his Japanese heritage and his jersey number with the Los Angeles Lakers. The signature is also engraved on the metal loop of the bio-based resin band, adding a subtle but meaningful detail that fans of the NBA star will appreciate.
The black-and-red color scheme isn’t just for show—it symbolizes Hachimura’s strength and passion, qualities that have propelled him from Toyama Prefecture to the global stage of the NBA. The red accents pop against the black stainless steel and resin case, creating a bold contrast that’s both eye-catching and versatile, whether paired with casual jeans or workout gear. The inverted LCD display, with its orange-red text, ensures readability in any lighting condition, thanks to the Super Illuminator LED backlight.
Built for Toughness, Packed with Features
True to G-Shock’s reputation, the GM5600RH-1 is built to withstand the toughest conditions. Its hybrid stainless steel and resin case offers exceptional durability, complete with G-Shock’s signature shockproofing. Whether you’re hitting the gym, hiking a trail, or navigating a busy workday, this watch is designed to keep up. It’s also water-resistant up to 200 meters, making it suitable for swimming, snorkeling, or even a rainy day without worry.
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The watch is powered by a quartz movement with a CR2016 battery, boasting an impressive five-year battery life. This reliability ensures you won’t be left scrambling for a replacement anytime soon. The GM5600RH-1 comes equipped with a robust suite of features that make it as practical as it is stylish. The 1/100-second stopwatch is perfect for timing workouts or races, with a capacity of up to 24 hours and modes for elapsed time, split time, and first- and second-place times. The countdown timer, with a 24-hour range and auto-repeat function, is ideal for interval training or keeping track of deadlines. A multifunction alarm and hourly time signals keep you on schedule, while the full auto-calendar ensures accurate date tracking without manual adjustments.
The Super Illuminator LED backlight is a standout feature, illuminating the display with a bright, clear glow for easy reading in low-light conditions. Whether you’re checking the time during an evening run or in a dimly lit room, the backlight ensures you’re never left in the dark. The watch also includes a flash alert that syncs with alarms, hourly signals, or the countdown timer, adding a visual cue to keep you on track.
A Collaboration with a Story
Rui Hachimura’s journey from a small town in Japan to the NBA is one of determination and resilience, qualities that resonate deeply with G-Shock’s ethos. Born on February 8, 1998, in Toyama Prefecture, Hachimura began playing basketball in middle school and quickly rose to prominence. At Meisei High School in Miyagi Prefecture, he led his team to three consecutive victories in the All-Japan High-School Tournament, earning a spot as a candidate for Japan’s national team. In 2016, he joined Gonzaga University, where he became a standout player, helping the Bulldogs reach the Elite Eight in the NCAA tournament and earning the Julius Erving Award as the best small forward in his third season.
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In 2019, Hachimura made history as the first Japanese national selected in the first round of the NBA draft, joining the Washington Wizards. His rookie season saw him play in 48 of 72 games, earning a spot on the second-team NBA All-Rookie Team. In 2023, he joined the Los Angeles Lakers, where he continues to shine as a forward. His “Black Samurai” logo, combining his jersey number and cultural heritage, is a testament to his identity as both an athlete and a proud Japanese native.
This collaboration with G-Shock, his fifth with the brand, reflects Hachimura’s ability to blend tradition with innovation. Previous models, like the GST-B100RH-1A (2020) and the GBM-2100RH-1A (2024), showcased bold designs inspired by basketball and Japanese culture, but the GM5600RH-1 takes a more refined approach. Its metal bezel and bio-based resin band—a nod to Casio’s commitment to sustainability—elevate the classic 5600 series while staying true to its roots.
Special Packaging for a Special Edition
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The GM5600RH-1 isn’t just a watch; it’s a collector’s item. It comes presented in special Rui Hachimura-branded packaging, including a cylindrical metal case and an outer box featuring his signature red logo. This attention to detail makes it a standout piece for G-Shock collectors and fans of Hachimura alike. The packaging enhances the watch’s appeal as a gift or a personal keepsake, adding a layer of exclusivity to an already impressive timepiece.
Availability and Value
Launched on September 2, 2025, the GM5600RH-1 is available for purchase at select retailers, the G-Shock Soho store, and online at gshock.casio.com for $280 in the U.S. It’s also available in Canada for approximately $400 CAD and is rolling out to European markets like the Netherlands, Spain, and France, where it’s known as the GM-5600RH-1. At this price point, the watch offers exceptional value, combining G-Shock’s legendary durability with a unique design that carries the personal stamp of an NBA star.
Why It’s a Must-Have
For those who value toughness, style, and a story behind their gear, the G-Shock GM5600RH-1 is a perfect fit. It’s a watch that can handle the demands of an active lifestyle while making a bold statement. The collaboration with Rui Hachimura adds a layer of authenticity and inspiration, reminding wearers of the power of perseverance and cultural pride. Whether you’re a longtime G-Shock fan, a basketball enthusiast, or simply someone who appreciates a well-crafted timepiece, this watch delivers on all fronts.
Image credit: Casio
From its rugged construction to its thoughtful design elements, the GM5600RH-1 is more than just a watch—it’s a symbol of strength, heritage, and the drive to push boundaries. As Hachimura continues to make his mark in the NBA, this timepiece stands as a testament to his journey and G-Shock’s commitment to crafting watches that endure.
