| Size | ★★★★★ |
| Weight | ★★★★★ |
| Functions | ★★★ |
| Materials | ★★★★★ |
| Battery Years | ★★★ |
| Price | ★★★★★ |
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About the Watch in short. The budget G-Shock model with an octagonal case and the latest Carbon Core Guard protection. The GA-2100 form factor resembles the first G-Shock DW-5000C, but with a pronounced octagonal shape and more streamlined corners – this way the Japanese pay tribute to the glorious past of the high-impact direction. The carbon fiber that is used in the GA-2100 case makes the watch more durable and lighter, not to mention the case thickness of 11.8 mm – the series can be called the thinnest among all G-Shock with an analogue dial. An additional window shows the current day of the week, and more detailed information about the date can be viewed on the digital display. The set of features here is only basic [world time, timer, stopwatch, alarm clock, calendar], but they are enough for most everyday tasks.
Quick Content Guide
- Japanese approaches to Tough and Functional Watches in GA-2100! *the most distinctive features in details
- General information about the watch *year of first release, model range etc.
- G-Shock GA-2100 Display Guide *for key functions only
- GA-2100 Usage Patterns *what the watch is usually meant for
- Feedback from Users and Experts *anonymous from different sources
- GA-2100 Model Range *in different colors and bands
- GA-2100 Limited Editions *unique style, materials, and price
- The most distinctive specs *from our Editorial point of view
- Other G-Shock GA Watches *similar by price and functions but different by cases
- Official GA-2100 Video *only from Casio Company
- G-Shock GA-2100 on the wrist! *only images and only on the wrist
- Official GA-2100 Specs *all details and for base version GA-2100-1A1
- GA-2100 Comparison Table *with similar G-Shock Watches
- Full Photo Gallery *various images
Enjoy Japanese approaches to Tough and Functional Watches!
Octagonal Bezel. The bezel features the octagonal design motif maintained since the very first G-SHOCK. The outline a sense of stability, creating an expression of power worthy of the G-SHOCK.
Minimal Design. Use of the latest toughness-driven construction with carbon fiber-reinforced resin made it possible to slim the case to the utmost limit. The side profile design pays homage to the very first model with its button layout, uneven surface form and fixed-angle band.
Dimensional Dial. With a sense of depth achieved with three-dimensional molding, the dial features a minute-mark-notched dial ring, three-dimensional index cuts, a mode dial and irregular shaped LCD in a sweetly balanced arrangement. The spacious layout makes for a face design offering simplicity as well as excellent visibility.
Monochromatic Color. The GA-2100 line comes in a thoroughly fashion-conscious color scheme. The GA-2100-4A boasts 9 different shades of red. The application of a different shade for each component — from the case exterior to the dial, dial ring, hands, LCD, buckles and more — gives the watch an overall integrated look, while bringing out an irresistible textural feel in its detailing.
Carbon Core Guard Structure. The module is protected with a carbon fiber-reinforced resin case. The special characteristics of the carbon fiber material — light weight, high strength and superior weather resistance — were leveraged to make the case as slim and compact as possible, with no compromise on shock resistance.
The Challenge of a Thinner Case. The developers pursued a thinner design while still satisfying the original G-SHOCK criteria for shock resistance. They strengthened the external structure and slimmed the module, achieving wafer-thin at just 11.8mm.
Thin Module. The module was slimmed by miniaturizing the componentry and employing optimized, high-density mounting for the circuit board structure. Combined with the Carbon Core Guard structure, these efforts made for an astonishingly smaller, slimmer case.
Double LED Light. The double LED with high luminance brightly illuminates the dial and LCD to ensure readability in the dark.
Slide Lever. A slide lever makes it easy to attach and remove the band — a very handy feature for cleaning and other maintenance.
Shock-Resistant Structure and 200m Water Resistance. The shock-resistant structure protects the watch. With 200m water resistance as well, the watch is ideal for use in a wide range of locations and situations.
General Information
| Price | 100$ *average Amazon Price, we may earn commission from purchases |
| Year of first Release | 2019 |
| Suitable for Wrist Size | 165 – 210 mm |
| Module Number | 5611 / Manual |
| Model Range | STANDART ANA-DIGI (This Line includes Digital and Analog displays on G-Shocks that are the best in “price/quality” category. Usually have traditional digital functions, but with beautiful hands. Don’t worry, the hands won’t prevent you from seeing digits, since there is a special Hand Shift technology that moves them to the neutral position) |
| Battery Type | SR726W × 2 (G-Shock Batteries) Buy Battery on Amazon → |
| Other Divisions the GA-2100 belongs to: *you may find all watches of the division by clicking on the link | G-Shock Ana-Digi G-Shock Carbon Core Guard |
G-Shock GA-2100 Display Guide *for key functions only. For you to know how it works))
Timekeeping
Use the Timekeeping Mode to set and view the current time and date.
Checking the Current Time in a Different Time Zone
You can use the World Time Mode to view the current time in one of 31 time zones (48 cities) around the globe. the city that is currently selected in the World Time Mode is called the “World Time City”.
Using the Stopwatch
The stopwatch measures elapsed time, split times, and two finishes.
– The stopwatch measures elapsed time in units of 1/100 seconds for the first hour, and in 1-second units after that for up to 24 hours total. After that, elapsed time reverts to zero and then stops.
Countdown Timer
The countdown timer start time can be set in 1-second increments up to a maximum of 24 hours. An alarm sounds when the countdown reaches zero.
GA-2100 Usage Patterns *what the watch is usually meant for
Feedback from Users *accumulated information from our own comments and emails, forum threads, socials, reviews, etc.
PROs
+ lightweight
+ attractive watch face
+ quick set up
+ easy to read
+ significantly thinner than the previous models
+ unique design
+ relatively cheap
CONs
– no solar
– this model as metal version with solar and Bluetooth will be a dream…
– An useless LED
Feedback from Experts *based on comparison info with similar watches by price, model range, etc.
PROs
+ hourly Time Signal
+ carbon (Carbon Core Guard) / Resin material
+ 3 years battery
CONs
– no Auto-Back Light
– no Magnetic Resistance
GA-2100 Model Range *may be updated
GA-2100HC-2A -
GA-2100HC-4A 
GA-2100-1A GA-2100-4A GA-2100-1A1 GA-2100SU-1A GA-2100THS-1A GA-2100THB-7A -
GA-2100SKE-7A
-
GA-2100-2A -
GA-2100-5A -
GA-2100-7A
-
GA-2100VB-1A -
GA-2100FR-3A -
GA-2100FR-5A
-
GA-2100HT-1A -
GA-2100CA-8A
GA-2100 Limited Editions *unique style, materials, and price
GA-2100THB-7A -
GA-2100HC-2A -
GA-2100HC-4A GA-2100SU-11
The Listing of All G-Shock GA-2100 Limited Watches → *with detailed description about the style
The most distinctive specs of GA-2100 — Octagon Form in a Slim 11.8mm Case
*Editorial
— 200-meter water resistance (good for swimming but not for deep diving)
— Carbon Core Guard structure (protects the module by enclosing it in a carbon case. The case is made of fine resin embedded with carbon fibers for outstanding strength and crack resistance)
Other G-Shock GA Watches *similar by price and functions but different by cases
These are not all G-Shock GA Series. Here is a list of All G-Shock GA Watches →
Official GA-2100 Video
Official Marketing Focus from Casio
Ever since the first DW-5000C went on sale back in 1983, G-SHOCK has continued to push the limits of timekeeping toughness while creating new and original designs. These new models embody these efforts in an attractively thin configuration.
These new models inherit the octagon form that was also employed for the original DW-5000C. Analog-digital timekeeping comes packed into a no-nonsense simple design without sacrificing G-SHOCK level toughness.
High-strength resin material, which is reinforced with carbon fibers, makes it possible to create a case that is a mere 11.8 mm thin, which is the thinnest among G-SHOCK combination models.
G-Shock GA-2100 on the wrist!
Official GA-2100 Specs / Features *for base version GA-2100-1A1
- Case / bezel material: Carbon / Resin
- Resin Band
- Mineral Glass
- Shock Resistant
- Carbon Core Guard structure
- 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 : 48.5×45.4×11.8mm
- Total weight : 51g
GA-2100 Comparison Table with similar G-Shock Watches
GA-140BMC-1A GA-2000-3A GA-2100TH-1A
GA-2100 | |||
Price (Amazon) | |||
Year of first Release | 2019 | 2019 | 2019 |
Accuracy | ±15 seconds per month | ±15 seconds per month | ±15 seconds per month |
SmartWatch Features | No | No | No |
Light | LED light | Neobrite (hands and hour markers) Double LED light | Neobrite (hands and hour markers) Double LED light |
Alarm | 5 daily alarms (with 1 snooze alarm) | 5 daily alarms | 5 daily alarms |
Timer | Measuring unit: 1 second | Measuring unit: 1 second | Measuring unit: 1 second |
Stopwatch | 1/1000-second stopwatch | 1/100-second stopwatch | 1/100-second stopwatch |
Hourly Time Signal | Yes | Yes | Yes |
World Time | 29 time zones (48 cities + coordinated universal time), daylight saving on/off, Home city/World time city swapping | 31 time zones (48 cities + coordinated universal time), daylight saving on/off, Home city/World time city swapping | 31 time zones (48 cities + coordinated universal time), daylight saving on/off |
Auto-Back Light | Yes | No | No |
Magnetic Resistance | Yes | No | No |
Case / bezel material | Resin | Carbon (Carbon Core Guard) / Resin | Carbon (Carbon Core Guard) / Resin |
Glass | Mineral Glass | Mineral Glass | Mineral Glass |
Battery | 2 years on CR1220 | 3 years on SR726W | 3 years on SR726W |
Size (mm) *we consider 48.9×42.8×13.4 to be a traditional watch size (as in DW-5600). So you are to compare how far or close the watch is to this size | 55×51.2×16.9 | 51.2×48.7×14.1 | 48.5×45.4×11.8 |
Full features (if you want to know more) |
GA-2100 Replacement Band (Strap) *availability
We think it is very important (before buying a new watch) to know if there will be some choice as for replacement bands for GA-2100 (in future or even now). So we made a research and you shouldn’t worry about your future as the bands are available for buying.
starting from 135$ on eBay →
starting from 48$ on PacParts →
Recent News about GA-2100
- [G-Shock Oak] GA-2100CA-8A is stylishly finished in a trendy camouflage pattern
- [G-Shock 2021] GA-2100FR and GA-2200MFR — Mix-Molded Colour Models
- [G-Shock Ana-Digi] GA-2100FR and GA-2200MFR — Mysterious Forest
- [G-Shock Digital] DW-5600CA and GA-2100CA Camouflage Series
- [G-Shock Ana-Digi] GA-2100 and GM-2100 — Futurist Watches Continue To Stand The Test Of Time
You ask, we answer…
The watch is good for swimming but not for deep diving.
It protects the module by enclosing it in a carbon case. The case is made of fine resin embedded with carbon fibers for outstanding strength and crack resistance.
STANDART ANA-DIGI (This Line includes Digital and Analog displays on G-Shocks that are the best in “price/quality” category. Usually have traditional digital functions, but with beautiful hands. Don’t worry, the hands won’t prevent you from seeing digits, since there is a special Hand Shift technology that moves them to the neutral position).
Not sure about GA-2100? There are more G-Shocks!
