G-Shock GBM2100RH-1A
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 GBM2100, with bold metal bezel, solar charging, and Bluetooth® connectivity. Touches of red - a G-SHOCK brand colour that also evokes Hachimura's passion for the game - are added to set off the gold colour 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 favourite 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.
- Auto time adjustment
- Easy watch setting
- Approximately 300 world time cities
- Time & place
- Reminder
- Phone finder
- CASIO WATCHES
- Mobile link (Wireless linking using Bluetooth®)
- Accuracy: ±15 seconds per month (with no mobile link function)
- 5 daily alarms
Hourly time signal
- Battery level indicator
- Full auto-calendar (to year 2099)
- Power Saving (display goes blank to save power when the watch is left in the dark)
- 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)
- Button operation tone on/off
- 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
- 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)
- 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)
- World time
38 time zones (38 cities + coordinated universal time), auto summer time (DST) switching, home city/world time city swapping
- Bio-based resin band
- Bio-based Resin / Stainless steel
- 49.3 × 44.4 × 11.9 mm
- Shock Resistant
- Tough Solar (Solar powered)
- Bluetooth: Connects to a smartphone and automatically adjusts the time
- 200-metre water resistance
- 78 g
- 145 to 215 mm
- Mineral Glass
- Neobrite
- Black ion plated bezel
Dispatch will be within 2 business days.
Delivery varies by location, please see the expected timeframe to receive your product below:
Metro: 1-4 business days
WA/NT/Regional: 2-6 business days
Change of Mind Returns
1. Watch Kings will allow a return where you have changed your mind, provided that the item in question is:
- returned within 14 days of receiving order.
- as new and is not used, worn, or opened and has all original packaging and tags in-tact (including any package seals (if any) being unbroken);
- in a resalable condition; and
- not damaged in any way.
2. We cannot accept change of mind returns on items that come in sealed packages or boxes where seals are damaged or broken.
3. You will be responsible for the cost and risk of returning goods, including the cost of return shipping. If the item is not received by Watch Kings, you will not be eligible for a return.
4. You may be provided with a refund only when the returned product is received, and it complies with the requirements outlined above.
5. If the returned item does not meet the conditions of this policy, you will be responsible for the cost of receiving your returned goods back to your nominated address.
INCORRECT OR FAULTY GOODS
Our quality control teams inspect all deliveries to ensure the products you receive meet our exact quality standards. However, if you do receive a faulty, damaged or the incorrect product, please contact us to arrange a return delivery and a refund or exchange.










