GBM2100RH-1A - Rui Hachimura

Say hello to the fourth Rui Hachimura signature G-SHOCK!

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. 

SPECIFICATIONS

Case size (L× W× H)

49.3 × 44.4 × 11.9 mm

Weight

72 g

Case and bezel material

Resin (Bio-based) / Stainless steel

Band

Bio-based resin band

Construction

Shock Resistant

Water resistance

200-meter water resistance

Power supply and battery life

Tough Solar (Solar powered)

Glass

Mineral Glass

Compatible band size

145 to 215 mm

Other

Neobrite

WATCH FEATURES

World time

World time

38 time zones (38 cities + coordinated universal time), auto summer time (DST) switching, home city/world time city swapping

Stopwatch

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

Timer

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)

Alarm/hourly time signal

5 daily alarms

Hourly time signal

Light

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)

Light colour

LED: White

Calendar

Full auto-calendar (to year 2099)

Mute feature

Button operation tone on/off

Energy saving feature

Power Saving (display goes blank to save power when the watch is left in the dark)

Battery display/alert

Battery level indicator

Run time

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)

Accuracy

Accuracy: ±15 seconds per month (with no mobile link function)

Other features

Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.)

12/24-hour format

Date/month display swapping

Day display (days of the week selectable in six languages)

Regular timekeeping:

Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (battery level, mode)

Digital: Hour, minute, second, pm, month, date, day

SMARTPHONE LINK

Smartphone Link feature

Mobile link (Wireless linking using Bluetooth®)

Apps

CASIO WATCHES

App connectivity feature

Auto time adjustment

Easy watch setting

Approximately 300 world time cities

Time & place

Reminder

Phone finder

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 colours 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.