Fast international shipping →

Height of the model:

Casio G-Shock Original GA-100-1A1ER Watch

Rating:
94% of 100
Shipping: Immediately Delivery: Free
€98.96
Manufacturer's suggested price €134.39
Available product variants:
Free delivery from £49
41 pts worth €4.84 for next purchases
Unlimited returns for KSK club members

30-Day Price Protection at KSK
Automatic coupon on price drops

Top
€98.96

Casio G-Shock Original GA-100-1A1ER Watch

Built for durability, this water-resistant and shockproof sports watch features precise quartz movement. Outfitted with an Auto-LED backlight for optimal visibility, the hands incorporate a fluorescent Neobrite coating to ensure easy readability in darkness. A resilient analog-digital dial is shielded by mineral glass with a Mohs hardness of 5 for enhanced protection.

Robust construction

The integration of the G-Shock system and a carbon-reinforced case enhances the watch's durability against shocks and mechanical impacts. Protection is further ensured by a mineral glass dial cover with a Mohs hardness of 5.

A high level of water resistance allows for submersion up to 200 metres (20 bar), providing reliable performance during swimming and even diving activities.

The case is engineered to shield the movement from magnetic fields, meeting the requirements of ISO Standard 764.

Dial, Auto-LED backlight, Neobrite

35 mm analog-digital dial provides a time display in 12/24-hour mode. Integrated Auto-LED backlight activates automatically when the wrist is tilted toward the face. Hands covered with a fluorescent Neobrite coating ensure clear visibility in low-light environments or total darkness.

Flexible strap

A secure and comfortable fit is provided by a black-colored elastic strap equipped with a metal buckle. Engineered to withstand moisture and perspiration, the material is perfectly suited for demanding activities.

5 alarms, calendar, stopwatch, timer, world time function, average speed measurement

The watch features:

  • 5 daily alarms equipped with a snooze feature
  • Advanced perpetual calendar for precise date tracking
  • Stopwatch with a maximum measurement time of 100 hours and 1/1000 second precision
  • Countdown timer with up to 24 hours duration
  • World time functionality for monitoring the hour across various time zones
  • Average speed calculation across covered distances

Battery-powered

Equipped with a power source provided by a CR1220 battery, the model delivers an estimated battery lifespan of 2 years, as specified by the manufacturer.

Main features

  • G-Shock technology
  • Water resistance rated up to 200 meters
  • Robust build quality
  • Automatic LED backlight feature
  • Hands coated with fluorescent Neobrite
  • Quartz mechanism
  • Integrated calendar
  • Chronograph (stopwatch)
  • Countdown timer
  • World time capability
  • Five daily alarms
Casio


Militaria.pl is a premium dealer of Casio.


Casio is a Japanese brand founded in 1946, which has remained one of the most recognizable consumer electronics manufacturers in the world for decades. It gained global fame with its iconic G-Shock series from the 1980s, valued for its high resistance to shocks, water, and extreme conditions. The company consistently develops its technologies, introducing innovations such as Tough Solar - a solar power system - and Wave Ceptor - radio time synchronization. Casio watches are popular among professionals and people looking for reliable models for everyday use and outdoor activities. The first G-Shock (model DW-5000C), designed in 1983 by engineer Kikuo Ibe, was so durable that it was tested by dropping it from the tenth floor, and yet it still worked flawlessly. Today, Casio is a symbol of innovation, durability, and timeless style.

More Information
Gender Men's
Smartwatch No
Body material Synthetic
Type of mechanism Quartz
Watch power supply Battery CR1220
Strap Plastic
Glass Mineral
Alarm Yes
Date stamp Yes
Stopwatch Yes
Backlight Yes
Waterproof 20 ATM / 200 m
Shockproof Yes
NFC No
Calendar Yes
Compass No
GPS No
Barometer No
Thermometer No
Altimeter No
Chronograph No
Pedometer No
Calorie counter No
Heart rate measurement No
Pulse oximeter No
Weight 70 g
EAN 4971850443865
Manufacturer code GA-100 -1A1ER
Brand Casio
Neobrite feature
Neobrite
Neobrite is a luminescent coating used in Casio G-Shock watches, applied to the hands and indices of the watch face. When exposed to daylight or artificial light, it glows in the dark, ensuring good readability at night. It is non-toxic, durable, and does not require battery power.
ISO Standard 764 feature
ISO Standard 764
ISO 764 is an international standard that defines a resistance of a watch to magnetic fields. Watches that comply with this standard must maintain their accuracy after being exposed to a magnetic field of 4800 A/m (approx. 60 Gauss). The standard guarantees that the components of the mechanism will not be permanently magnetized and that the watch will function properly after exposure to typical sources of magnetic fields, such as smartphones, speakers, and electronic equipment.

Reviews with photos

Review summary

Automatically prepared based on reviews

Number of reviews: 14

  1. О... Review confirmed by purchase
    100%

    The watch looks great and fully meets my expectations. It is durable and works flawlessly. Unfortunately, it has one flaw – the red hour hand is hard to see in low light, even with the backlight.

  2. A... Review confirmed by purchase
    100%

    I thought about it for a long time, but in the end I decided to buy it. This is really an original product and in my opinion very comfortable. The downsides for me are: the backlight could be stronger, Kyiv is missing from the list of cities, and the settings are a bit unclear. As for the store, I am very pleased, the package arrived in about five days.

  3. T...
    100%

    The watch performs well in tough conditions. It is shockproof and water resistant up to 200 meters. The analog-digital display looks very good. Modern and robust appearance. Price is adequate for the quality. I recommend it.

  4. A...
    100%

    A rugged watch. I've banged it here and there more than once, and nothing ever happened. Honestly, I only use it to show me the current time and that's it. I consider all those extra features, which I don't use anyway, as unnecessary additions. I would buy it again without hesitation. Great design.

  5. A...
    100%

    A rugged watch. More than once I've hit it against things and nothing happened to it. To be honest, I only use it to check the current time and that's all. The other functions, which I don't use anyway, I consider unnecessary extras. I would buy it again without hesitation. Great design.

  6. B...
    100%

    In my opinion, this is the ideal watch model for the forest and various military activities. The entire outer texture is super durable, it shows everything perfectly and works great.

  7. P... Review confirmed by purchase
    100%

    Casio... what can I say, the brand speaks for itself with a capital 'B'. The watch doesn't let you down, even in tough conditions, whether in sand or water. I am very satisfied with this watch, it looks great and is super durable, I highly recommend it.

  8. C... Review confirmed by purchase
    100%

    I bought it recently and so far I've been pleasantly surprised. First of all, the watch is very clear. Everything is easily visible. The second important thing is water resistance. I wash dishes and shower with it. Besides that, it's very nice looking. Massive, masculine, and yet lightweight. I have a small wrist, and it fits perfectly. A circumference of 16 cm is not a problem here. I highly recommend this purchase, as well as the entire store.

  9. A...
    40%

    A strange decision — fluorescent markers only on the scale. In fact, there's no use at night without backlighting. During the year, the button was repaired under warranty. For some reason, Casio's international warranty is not recognized by our services.

  10. A...
    100%

    A truly masculine watch. The design is just an amazing marvel. Water resistance tested, it works, nothing leaks inside the watch. There is only one big minus: it is hard to figure out all these functions, and there are so many of them. In the end, who needs all that? I bought it only for the looks, and all those fancy features just collect dust because I don't need them. It just needs to show me the time so I don't have to pull my smartphone out of my pocket. For the looks—so masculine, military-tactical, super tough—it deserves ten stars.

  11. M... Review confirmed by purchase
    100%

    Above all, the watch has a great design, it's simply beautiful! Plus, its durability and water resistance. Nice features like alarms, stopwatch, different world times. The backlight is enough to read the time at night. The downside is handling—it takes a while to figure out the options at first, but it's a great watch!

  12. p...
    80%

    The watch is nice, rugged, waterproof, but it has a few flaws: very poor orange LED backlighting, which does not fully illuminate part of the digital display. If you want to see the final result, e.g. from the stopwatch, you have to hold your finger in the middle of the dial so that the light reflects off your finger and is directed onto the display. People with poor eyesight may have trouble reading the display even on sunny days because a so-called negative display is used here. It often happens that, at hours such as x:35 - x:45, you cannot read the display because the large hand covers it. This is irritating enough to make daily use difficult. Overall, the product is definitely worth recommending.

  13. B...
    100%

    I bought it as a gift for my father as a retiree's watch. He is very satisfied; the watch is lightweight, durable, and easy to read.

  14. J...
    100%

    I don't think anyone needs to review Casio as a company. It's a class of its own. Very good quality workmanship.

No reviews

  1. ...