Casio G-Shock GA-900 — 10-sided bezel & 7 years Battery

*GA-900SKL-7A – Updated February 2022 color! Buy it on Amazon!

Rating: 4 out of 5.
Size★★★
Weight★★★★
Functions★★★
Materials★★★★
Battery Years★★★★★
Price★★★★★
How did we compose this rating? Enjoy our calculations →

GA-900 Model Range *may be updated

*Want to be the first to know about new G-Shock Updates? Here we store all recent Monthly G-Shock Updates →


Quick Content Guide

  1. GA-900 Model Range *in different colors and bands
  2. General information about the watch *year of first release, model range etc.
  3. Official GA-900 Video *only from Casio Company
  4. G-Shock GA-900 Display Guide *for key functions only
  5. G-Shock GA-900 on the wrist! *only images and only on the wrist
  6. GA-900 Usage Patterns *what the watch is usually meant for
  7. G-Shock GA-900 Watch Review *our detailed review of the watch
  8. Feedback from Users and Experts *anonymous from different sources
  9. GA-900 Limited Editions *unique style, materials, and price
  10. The most distinctive specs *from our Editorial point of view
  11. Other G-Shock GA Watches *similar by price and functions but different by cases
  12. Official GA-900 Specs *all details and for base version GA-900C-1A4
  13. Japanese Unique Features in GA-900 *the most distinctive features in details
  14. GA-900 Comparison Table *with similar G-Shock Watches
  15. Full Photo Gallery *various images
  16. Recent News about GA-900 *the latest breaking news and videos


General Information

Price$130
*average Amazon Price, we may earn commission from purchases
Year of first Release2020
Suitable for Wrist Size150 – 220 mm
Module Number5637 / Manual
Model RangeSTANDART 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 TypeCR2016 (G-Shock Batteries)
Buy Battery on Amazon →
Other Divisions the GA-900 belongs to: *you may find all watches of the division by clicking on the linkG-Shock Ana-Digi

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Official GA-900 Video

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G-Shock GA-900 Display Guide *for key functions only. For you to know how it works))

Using the Stopwatch

The stopwatch measures elapsed time, split times, and two finishes.
– The measurement range of the stopwatch is 23 hours, 59 minutes, 59.99 seconds. Elapsed time returns to zero automatically and timing continues from there when the maximum limit is reached.

Countdown Timer

The countdown timer can be set within a range of one minute to 60 minutes. An alarm sounds when the countdown reaches zero.

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”.

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G-Shock GA-900 on the wrist!

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GA-900 Usage Patterns *what the watch is usually meant for

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Enjoy our G-Shock GA-900 Watch Review

This GA-900A-1A9 model, like the entire GA-900 line, is of very high quality. The strap’s quality and the “serpentine” styling continued to impress me by the end of the review. The watch is not suitable for everyone, as the size is difficult to call compact, and the style is not designed for strict business meetings. But if your life, clothing style, profession allow, I see no reason not to enjoy the pleasant emotions of the industrial GA-900 for a very reasonable price. Read Full Review →

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Feedback from Users *accumulated information from our own comments and emails, forum threads, reviews, etc.

PROs
+ nice design
+ big size but not gaudy
+ 7 years battery

CONs
– the light may be brighter
– readability is not ideal
– not for all wrists (big size)

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GA-900 Limited Editions *unique style, materials, and price

The Listing of All G-Shock GA-900 Limited Watches → *with detailed description about the style

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What we like in GA-900 *comments by experts with 10 years experience in writing about Casio watches
— Decagonal bezel
(very unique industrial style for modern G-Shocks)
— Hand Shift (moves the hands to neutral position for a better digital screen readability)
— 200-meter water resistance (good for swimming but not for deep diving)
— Battery life: 7 years (the longest lasting battery for a non-solar G-Shock watch with an analog display)

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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 →


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Official Casio Description. G-SHOCK announces a new lineup of heavy-duty model that is great for wear in tough environments and as street fashion items as well.
The industrial design motif of this model is created by a 10-sided bezel that resembles the shape of a nut. The bezel is secured by four screws for a tough and rugged look. Combination timekeeping is provided by analog hands along with a digital display for the ultimate in operational ease. The design of the hands and the graphic figures that appear in the digital readouts create a powerful face design that enhances readability. The band connection and all buttons have checkered surfaces that prevent slipping and contribute to operational efficiency.



Official GA-900 Specs / Features *for base version GA-900C-1A4

  • Case / bezel material: Resin
  • Cloth Band
  • Shock Resistant
  • Mineral Glass
  • 200-meter water resistance
  • LED light (Super Illuminator)
    Selectable illumination duration (1.5 seconds or 3 seconds), afterglow
  • Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.)
  • World time
    31 time zones (48 cities + coordinated universal time), daylight saving on/off, Home city/World time city swapping, One-touch UTC Time Zone Access
  • 1/100-second stopwatch
    Measuring capacity: 23:59’59.99″
    Measuring modes: Elapsed time, split time, 1st-2nd place times
    Others: target time alarm, direct timing start from the timekeeping mode
  • Countdown timer
    Measuring unit: 1/10 second
    Countdown range: 60 minutes
    Countdown start time setting range: 1 to 60 minutes (1-minute increments)
  • 5 daily alarms (with 1 snooze alarm)
  • Hourly time signal
  • Full auto-calendar (to year 2099)
  • 12/24-hour format
  • Button operation tone on/off
  • Regular timekeeping: Hour, minute, second, pm, month, date, day
  • Accuracy: ±15 seconds per month
  • Approx. battery life: 7 years on CR2016
  • Size of case : 52.8×49.5×16.9mm
  • Total weight : 63g

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Enjoy Japanese Unique Features in GA-900!

*some images are about G-Shock 5000/5600 cases, but the technology, approaches, concepts and philosophy remains the same for the whole G-Shock Model Range

Hollow case structure. Based on a realization that “shocks are not transmitted inside a bouncing rubber ball,” the structure was designed to let the module float inside the case, relieving shocks transmitted from outside. Today, the module’s shock resistance is realized through further technical innovations. But the revolutionary tough structure that gave G-SHOCK its origin began here.

All-directional covering. If the watch is dropped, the protruding bezel fully enclosing it absorbs the shock, protecting the buttons directly connected to the module and alleviating shocks from all directions. The bezel also guards the surface of the crystal. The band is curved stiffly at the point of connection with the case, moreover, enabling it to serve as a shock absorber and prevent direct shocks to the back of the case.

Protective cushioning of key parts. The crystal oscillator and other critical parts inside the module are guarded individually by cushioning material. Any strong shock to the watch causes immediate distortion of the cushioning inside the module, preventing contact failure and malfunction.

Japan Quality. Constructed with genuine quality, CASIO products provide truly practicable applications in which functionality and beauty combine. The leading-edge LSI technologies and skilled craftsmanship that give life to CASIO watches exemplify the quality Japan boasts in the world marketplace.
For CASIO, “faith in manufacturing” refers to an inexorable advancement of digital technologies and an uncompromising commitment to fine craftsmanship. This faith engenders unparalleled performance that not only elevates CASIO watches as close as possible to perfection, but that actually changes their wearers’ lifestyles.


GA-900 Comparison Table with similar G-Shock Watches


GA-900 

Price (Amazon)

Year of first Release

2020

Accuracy

±15 seconds per month

±15 seconds per month

±15 seconds per month

SmartWatch Features

No

No

No

Light

Neobrite (hands and hour markers) and LED light (Super Illuminator)

LED light (Super Illuminator)

Neobrite (hands and hour markers) Double LED light

Alarm

5 daily alarms (with 1 snooze alarm)

5 daily alarms (with 1 snooze alarm)

5 daily alarms

Timer

Measuring unit: 1 second
Input range: 1 minute to 24 hours (1-minute increments and 1-hour increments)

Measuring unit: 1/10 second
Countdown range: 60 minutes
Countdown start time setting range: 1 to 60 minutes (1-minute increments)

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)

Stopwatch

1/100-second stopwatch
Measuring capacity: 999:59'59.99''
Measuring modes: Elapsed time, split time, 1st-2nd place times

1/100-second stopwatch
Measuring capacity: 23:59'59.99"
Measuring modes: Elapsed time, split time, 1st-2nd place times
Others: target time alarm, direct timing start from the timekeeping mode

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

Hourly Time Signal

Yes

Yes

Yes

World Time

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, Home city/World time city swapping, One-touch UTC Time Zone Access

31 time zones (48 cities + coordinated universal time), daylight saving on/off

Auto-Back Light

Yes

No

No

Alpha Gel /
Vibration Resistance

No

Yes

No

Magnetic Resistance

Yes

No

No

Mud Resistance

No

Yes

No

Case / bezel material

Resin / Stainless steel

Resin

Carbon (Carbon Core Guard)

Glass

Mineral Glass

Mineral Glass

Mineral Glass

Battery

3 years on SR927W

7 years on CR2016

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

51.9×48.8×16.9

52.8×49.5×16.9

48.5×45.4×11.8

Full features (if you want to know more)

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Recent News about GA-900 *on casiofanmag.com

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You ask, we answer…

How does Hand Shift in GA-900 work?

It moves the hands to neutral position for a better digital screen readability.

What is Decagonal bezel in GA-900?

It is very unique industrial style for modern G-Shocks.

What Battery life does GA-900 have?

7 years (the longest lasting battery for a non-solar G-Shock watch with an analog display).


Not sure about GA-900? There are more G-Shocks!

Back to All G-Shock Models →

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