Casio G-Shock GBM-2100RH-1A Rui Hachimura Signature Tough Solar Bluetooth Men's Watch

The Casio G-shock GBM-2100RH-1A Rui Hachimura Signature Tough Solar Bluetooth Men's Watch. is a bold tribute to the globally celebrated basketball player Rui Hachimura. This fourth signature model combines G-SHOCK’s legendary toughness with Hachimura's unique style, making it an essential piece for sports and fashion enthusiasts alike. Based on the GBM-2100, this timepiece features a striking black bio-based resin band and a gold-tone dial with a basketball-court motif, accented by bold red touches that symbolize Hachimura’s passion and the G-SHOCK brand identity.

The watch is designed with thoughtful details, including Hachimura’s original logo featuring the Japanese symbol "八" (hachi, meaning “eight”) engraved on the case back and side button at the 8 o’clock position. These personalized elements celebrate his heritage and jersey number, adding a unique flair. Crafted with a resin and stainless-steel bezel, the watch maintains its shock-resistant construction and 200-meter water resistance, ensuring it is as durable as it is stylish.

Powered by Tough Solar technology, the watch is environmentally conscious and offers reliable performance. Bluetooth® connectivity allows for seamless smartphone pairing, enabling features like automatic time adjustment and customization via the CASIO WATCHES app. Lightweight at 78 g and compact with dimensions of 49.3 × 44.4 × 11.9 mm, this watch offers unparalleled comfort and wearability. Rui Hachimura's signature watch is a dynamic fusion of athleticism, cultural pride, and cutting-edge functionality, embodying the spirit of a true basketball sensation. Available at Watch Zone . UPC: 4549526379529

Smartphone Link/App Connectivity Features
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

Watch Features

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 color
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
Operation Guide (Opens in a new tab)