Jump into the future of tough, rugged watches with this signature timepiece inspired by professional basketball player Rui Hachimura.

This collaboration model is based on the GBM-2100, with bold metal bezel, solar charging, and Bluetooth® connectivity. Touches of red — a G-SHOCK brand color that also evokes Hachimura’s passion for the game — are added to set off the gold color of the dial, which features a basketball-court motif. The black band highlights the watch face’s powerful impact and pulls the design together for a timepiece that projects focus and strength.

Hachimura’s original logo featuring the symbol 八 (hachi in Japanese, meaning “eight”) is engraved on the case back, and the side button at the 8 o’clock position is laser engraved with the hachi symbol, as well. These and other Hachimura-inspired symbols are sprinkled throughout the design, for a collaboration worthy of a true global basketball sensation.

The shock-resistant construction you expect from a G-SHOCK in a design as sharp, sporty, and fearless as Hachimura himself.

- Comments from Rui Hachimura
This G-SHOCK signature watch is a limited edition I produced for everyone who enjoys both sports and fashion. It's designed with my favorite colors and the black samurai logo. Please take a look at this watch and try it for yourself.

Rui Hachimura
Born February 8, 1998 in Toyama Prefecture, Japan. After graduating from Meisei High School in Miyagi in 2016, Hachimura attended Gonzaga University in the United States. As a member of the Gonzaga University basketball team, he became the first Japanese national to play in a National Collegiate Athletic Association (NCAA) tournament. Hachimura received the 2018-2019 Julius Erving Award, which recognizes the top men’s collegiate small forwards of the year. He made history when he became the first Japanese-born player ever to be chosen in the NBA Draft, going to the Washington Wizards as the ninth overall pick. Hachimura joined the Los Angeles Lakers in 2023.

Case / bezel material: Bio-based Resin / Stainless steel 
Bio-based resin band
Shock Resistant 
Neobrite 
Mineral Glass
Black ion plated bezel
200-meter water resistance
Tough Solar (Solar powered)
Double LED light
LED light for the face (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
LED backlight for the digital display (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
LED:White
Mobile link (Wireless linking using Bluetooth®) 
World time 
38 time zones (38 cities coordinated universal time), auto summer time (DST) switching, home city/world time city swapping
1/100-second stopwatch
Measuring capacity: 
00'00''00~59'59''99 (for the first 60 minutes)
1:00'00~23:59'59 (after 60 minutes)
Measuring unit: 
1/100 second (for the first 60 minutes)
1 second (after 60 minutes)
Measuring modes: Elapsed time, lap/split time
Countdown timer
Measuring unit: 1 second
Countdown range: 60 minutes
Countdown start time setting range: 1 second to 60 minutes (1-second increments and 1-minute increments)
5 daily alarms
Hourly time signal
Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.)
Battery level indicator
Full auto-calendar (to year 2099) 
12/24-hour format 
Button operation tone on/off
Power Saving (display goes blank to save power when the watch is left in the dark)
Date/month display swapping
Day display (days of the week selectable in six languages)
Regular timekeeping:
Analog: 2 hands (hour, minute (hands move every 20 seconds)), 1 dial (battery level, mode)
Digital: Hour, minute, second, pm, month, date, day
Accuracy: ±15 seconds per month (with no mobile link function)
Approx. battery operating time:
7 months on rechargeable battery (operation period with normal use without exposure to light after charge)
18 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)
Size of case : 49.3 × 44.4 × 11.9 mm
Total weight : 78 g