The watch performs excellently even in demanding conditions. It is resistant to shocks and water up to a depth of 200 meters. The display, combining analog and digital readings, looks excellent. It has a modern, solid appearance. The price matches the quality of the product. I definitely recommend it.
Casio G-Shock Original GA-100-1A4ER Watch
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€83.21
€131.99
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€131.99
€83.21
Casio G-Shock Original GA-100-1A4ER Watch
Sports watch with water and shock resistance featuring a precise quartz movement. Includes an Auto-LED backlight that lights up the dial when the wrist is lifted toward the face. Hands are treated with a fluorescent Neobrite coating for easy readability in the dark. The analog-digital face is secured with mineral glass rated at a Mohs hardness of 5.
Robust construction
Incorporating the G-Shock system along with a carbon-reinforced case greatly enhances the watch's ability to withstand shocks and mechanical damage. The dial is safeguarded by mineral glass, rated with a Mohs hardness of 5, providing effective scratch resistance.
Featuring enhanced water resistance, the model can endure submersion up to 200 meters (20 bar), making it ideal for swimming and diving.
The case design ensures the movement is shielded from magnetic fields, adhering to ISO Standard 764.
Dial, Auto-LED backlight, Neobrite
The analogue-digital display, measuring 35 mm in diameter, presents time in a 12/24-hour format. A built-in Auto-LED backlight is triggered automatically by specific wrist movements. Neobrite-coated hands provide excellent readability in dim lighting environments.
Flexible strap
A black strap made of flexible material ensures comfortable wear and is secured with a metal buckle. The material is sweat and moisture-resistant, making it ideal for intense activities.
5 alarms, calendar, stopwatch, timer, world time function, average speed measurement
The watch features:
- 5 daily alarms with a snooze option
- an advanced perpetual calendar
- a stopwatch capable of measuring up to 100 hours with an accuracy of 1/1000 of a second
- a countdown timer that can run for up to 24 hours
- a world time function to view the time in various time zones
- the ability to measure average speed over a traveled distance
Battery-powered
Runs on a CR1220 battery, with an estimated lifespan from the manufacturer of around 2 years.
Main features
- G-Shock system
- Water resistance reaching 200 meters
- Durable construction
- Auto LED backlight feature
- Fluorescent Neobrite coating on the hands
- Quartz movement
- Calendar
- Stopwatch
- Timer
- World time feature
- 5 alarms
MILITARY is a premium dealer of Casio.
Casio is a Japanese brand founded in 1946, known worldwide as one of the leaders in consumer electronics. A breakthrough moment in the company's history was the launch of the G-Shock series in the 1980s, which gained cult status thanks to its exceptional resistance to shocks, water, and extreme environmental conditions. Casio is constantly developing its technologies, introducing features such as Tough Solar - a solar power system - and Wave Ceptor - time synchronization using radio waves, which ensures precision and reliability. The brand's watches are popular among both professionals and users looking for durable solutions for everyday use and outdoor activities. The first G-Shock model – DW-5000C, designed by engineer Kikuo Ibe in 1983, passed a drop test from the tenth floor and continued to function flawlessly, which became the foundation of the series' legend. Today, Casio is synonymous with innovation, reliability, and timeless design.
| 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 |
| Dimensions | 55 x 51.2 x 16.9 mm |
| 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 | 4971850443940 |
| Manufacturer code | GA-100 -1A4ER |
| Brand | Casio |
| EAN |
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
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 permanentl...
Reviews with photos
Review summary
Automatically prepared based on reviews
Number of reviews: 12
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The watch is very durable. I have hit it against various things many times and nothing has happened to it. Honestly, I mainly use it to check the time, and the other functions are unnecessary extras for me. I would buy it again without hesitation. It looks great.
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This is a very durable watch. I've accidentally hit it many times and nothing happened to it. I mainly use it to check the time, since I don't need the other features. I would buy it again without hesitation. It also has a great look.
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In my opinion, this is an excellent watch for forest trips and all kinds of military activities. The case is extremely durable, the watch works flawlessly, and everything is displayed very clearly.
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P... Review confirmed by purchase
Casio is a brand that needs no introduction. This watch performed well for me even in tough conditions, like sand and water. I am very satisfied; it looks great and is highly durable. I recommend it to everyone.
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C... Review confirmed by purchase
I bought this watch recently and it pleasantly surprised me. Mainly because it is very easy to read and everything is clearly visible. An additional advantage is water resistance – I even use it while washing dishes and taking a shower. The watch is very nice, sturdy, masculine, and light. Despite my thin wrist (16 cm), it fits perfectly. I highly recommend both the watch and the store.
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An unusual solution – the markings only glow on the scale, so they are useless at night without the backlight. After a year, I had to replace a button under warranty. Unfortunately, for some reason Polish service centers do not honor Casio's international warranty.
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This is truly a men's watch with a brilliant look. Water resistance tested – no water gets inside. However, there is one drawback – operating many functions is quite complicated, and most of them aren’t useful for me anyway. I mainly bought this watch for the design. For its military, tactical style, I give it the highest rating.
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M... Review confirmed by purchase
First of all, the watch looks great; it is very nice! Big plus for its solidness and water resistance. It has interesting features, such as alarms, stopwatch, and different time zones. The backlight is sufficient to check the time at night. The only difficulty is the operation – at first you have to get used to the options, but overall it's an excellent watch!
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The watch looks good, is solid, resistant to damage and waterproof, but it has some drawbacks: the LED backlight is very weak, orange in color, and does not evenly illuminate the part of the digital display. To read the final result, for example with the stopwatch, you have to place your finger on the center of the dial so that the reflected light falls on the display. People with vision problems may have difficulty reading the display, even in strong sunlight, because a so-called negative display is used here. It often happens that between, for example, x:35 - x:45, the hand covers the display, making it impossible to read – this can be really troublesome. Despite these flaws, I consider the product worth recommending.
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I bought this watch as a retirement gift for my dad. He is very satisfied – the watch is lightweight, sturdy, and easy to read.
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Casio is a brand that needs no introduction. Top-notch quality, very solid workmanship.
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