Upgrade the retro look you love with the octagonal GA-2100 line, which inherits the design concept of the very first G-SHOCK, but now with Smartphone Link and Tough Solar power.

ANALOG-DIGITAL 2100 Series

Simplicity of design
with octagonal form:

The same sense of size, with added functionality

 

While maintaining the iconic octagonal form of the GA-2100 inherited from the very first G-SHOCK, the GA-B2100 now also has Smartphone Link and Tough Solar power capabilities.

It also employs the Carbon Core Guard structure to preserve a similar fit on the wrist as the original model.

 

Dial featuring enhanced
texture as well as
improved functionalty

The dual-layer dial construction highlights the dimensionality of the LCD and inset dial.

Meticulous attention to detail gives the dial a look of enhanced texture, especially the different surface treatments we apply to the dial face and inset dial.

 

Homage to the first
color G-Shock
models

We have brought back the classic colors first used in the G-SHOCK 5600 line for the case and band, inspired by the concept of getting back home.

The color scheme of the DW-5600C also includes accents to the dial. Blue, green, and all-black options offer clean, minimalist color choices.


Carbon Core Guard structure, both strong and light

The shock-resistant structure unique to G-SHOCK protects the module, with a carbon fiber-reinforced resin case offering strength, lightness, and excellent weather resistance.

 

Power

Solar-powered timekeeping with Bluetooth® for enhanced accuracy and reliability

Super Illuminator

Super Illuminator (high-brightness double LED light) for maintaining watch readability in the dark

*Image shows the GA-B2100-1A.

Multiple functions, all at your fingertips

-Time & Place log:
Pressing a button on the watch records the current date, time and position on a map. Useful as an activity log.

Reminder setting:
The watch will remind you of up to five upcoming events, which you set within the app.

– Automatic time adjustment (four times a day)
– World time for over 300 cities
– Home time/world time switching
– Timer/alarm setting
– Phone finder

Confirmed OS versions

SMARTPHONE LINK

Links with a smartphone for more accurate timekeeping and access to a host of mobile link functions.

SHOCK RESISTANT

Shock-resistant construction protects against impact and vibration.

TOUGH SOLAR

CASIO’s original solar-charging system converts not only sunlight but also light from fluorescent lamps and other sources into power.

G-SHOCK CONNECTED APP

Connection with a phone requires installation of the G-SHOCK CONNECTED App on the phone.

  • Bluetooth® Smart

    The watch is equipped with energy-saving Bluetooth® technology, which offers power-saving data transfer at the push of a button. The watch can connect to a smartphone wirelessly via Bluetooth®, enabling access to a wide range of useful functions.

  • Smartphone time

    Local time will automatically be adjusted whenever the watch is connected with a smartphone.

  • Solar Power

    A solar cell provides power for operation

  • Super Illuminator

    At the touch of a button, the display can be brightly illuminated in a fashionable color

  • Shock-resistant

    Shock-resistant construction protects against impact and vibration.

  • Water Resistant (20 BAR)

    The “BAR” value indicates the number of atmospheres to which water resistance is ensured. 20 BAR means water resistance to 20 atmospheres. Watches marked “200m” have the same water resistance as 20 BAR watches

  • Stopwatch

    1/100 sec. - 24 hours
    Elapsed time, split time and final time are measured with 1/100-sec accuracy. The watch can measure times of up to 24 hours.

  • Timer

    1/1 sec. - 24 hours
    For fans of precision: the countdown timers help you to remember specific or recurring events by giving off an audible signal at a preset time. They The time can be set to the nearest second and up to 24 hours in advance.

  • 5 daily alarms

    The daily alarm reminds you about recurring events with an acoustic signal at the time you have set. This model has 5 independent alarms for flexible reminders of important appointments.

  • Button tones on/off

    The button tones for using the mode button can be turned off. This means that the watch no longer beeps when switching from one function to another. Preset alarm or countdown timers remain active when the button tones are deactivated.

  • Hand Moving Function

    With a push of a button, hands are moving and permit a free visibility of functions like stopwatch or date.

  • Phone Finder

    Misplaced your smartphone? All it takes is the push of a button on your watch and the smartphone sounds an alarm.

  • 12/24-Hour Timekeeping

    Times can be displayed in either 12-hour or 24-hour format

  • Case

    Carbon-reinforced resin casing
    Thanks to its extremely high level of durability, resin is the ideal material for watches. Combining resin with carbon—a particularly robust material—creates a casing that is even more stress-resistant and offers even greater protection against external influences, resulting in an extremely high level of durability.

  • Band

    Resin band
    Synthetic resin is the ideal material for wrist straps thanks to its extremely durable and flexible properties.

  • Mineral glass

    The tough mineral glass resists scratching.

  • Buckle

    The bracelet is equipped with a buckle.

  • Alternate Sku No.

    GA-B2100-3AER, GAB2100-3A, GA-B2100-3ACR

  • Case / bezel material: Resin
  • Resin Band
  • Accompanied attached band
  • Mineral Glass
  • Neobrite
  • Shock Resistant
  • Carbon Core Guard structure
  • Tough Solar (solar powered)
  • Smartphone Link
  • 200-meter water resistance
  • 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)
  • World time
    31 time zones (48 cities + coordinated universal time), daylight saving on/off
  • 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, split time, 1st-2nd place times
  • Countdown timer
    Measuring unit: 1 second
    Countdown range: 24 hours
    Countdown start time setting range: 1 second to 24 hours (1-second increments, 1-minute increments and 1-hour increments)
  • 5 daily alarms
  • Hourly time signal
  • Hand shift feature
  • Full auto-calendar (to year 2099)
  • 12/24-hour format
  • Button operation tone on/off
  • Regular timekeeping
    Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (day)
    Digital: Hour, minute, second, pm, month, date
  • Accuracy: ±15 seconds per month
  • Approx. battery life: 3 years on SR726W × 2
  • Size of case: 48.6×45.5×11.9mm
  • Total weight: 52g
  • Module No. 5689
  • UPC: 889232322964

Carbon Core Guard structure logo

G-Shock Connected App

GET IT ON GOOGLE PLAY

G-Shock Connected App

DOWNLOAD IT ON THE APP STORE

Operation Guide (PDF)
OPERATION GUIDE (HTML) ^
CASIO WATCH MANUAL ARCHIVES ^
CASIO SUPPORT ^

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