Autumn 2021 brings the popular "CasiOak" now also in a version with a reduced steel case.
Casio G-Shock GM-S2100B-8AER are an addition to the popular "CasiOak" line, which is characterised by an octagonal case. Newly made of steel and with a smaller diameter.
Casio G-Shock GM S2100B-8A comes, as we are used to with the line, with workmanship thanks to which it withstands exposure to demanding conditions. Even with the newly designed case, it loses nothing of its high durability (on a plastic base there is a metal cover).
The watch has a combined (analogue and digital) metallic dial, which displays the date, day of the week, stopwatch, alarm and many other functions that you will use during sport and in your free time.
The watch case is complemented by a rubber strap, excelling in high durability and long service life. Despite the materials used, the weight of the watch is only 55 grams. The dial is protected by mineral crystal. For easy readability in poorer light conditions, the watch is equipped with hands with a luminescent layer and double LED lighting, which at the press of a button illuminates both the analogue and digital part of the dial. The digital display shows not only the selected mode, but also related data. Thanks to the case diameter of 40,4 mm, it is among larger watches. The water resistance of this model is 200 m, so you can swim with the watch without any problems.
The Casio G-Shock model line offers a suitable watch for anyone looking for a combination of durable, sporty watches in an attractive design, together with a rich range of functions. All models from this globally popular line are, compared to ordinary watches, more resistant to shocks and impacts. They also demonstrate increased resistance to magnetic fields.
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| Brand | Casio |
| Gender | Male, Female, Unisex |
| Style | Sports |
| Origin | Japanese |
| Guarantee | 5 years |
| Waterproof | 200 m |
| Weight | 55 g |
| Movement | Quartz |
| Caliber | 5663 |
| Movement accuracy in seconds | ±15 sec. / month |
Stopwatch measurement accuracy ![]() |
1/100 sec. |
| Case size | 40,4 mm |
| Case height | 11 mm |
| Case shape | Round |
| Case material | Plastic, steel |
| Case color | Black |
| Crystal material | Mineral |
| Dial | Combined |
| Dial color | Black |
| Strap material | Rubber |
Buckle ![]() |
Tang Buckle |
| Strap color | Black |
Alarm clock ![]() |
Yes |
| Date | Yes |
| Backlight | Yes |
Stopwatch ![]() |
Yes |
Day of the week indicator ![]() |
Yes |
| Functions | Date, Day of the week, Stopwatch, Alarm clock, Backlight |
| Battery | Yes |
Luminescence ![]() |
Hands |
| Other functions | Countdown, World time, 12/24 mode, Auto calendar, Snooze alarm, Button tone, Hourly time signal, Hand cleaning |
We guarantee the accuracy of the data. Did you find a mistake? Let us know and get 8 EUR on Watch purchase.
Guarantor: Kateřina Žváček
Jiří Štencek
+420 252 252 306
Mo-Th 9-19
Fr-Sa 9-16
info@helveti.eu
The product is included in categories
Men's watches with stopwatch G-Shock G-Shock Ladies Japan Watches Ladies sports watch Men's Japanese watch Men's Quartz watches Men's sports watches Men's watches on sale Men's watches under 200 EUR Men's watches with date Men’s watches Casio G-Shock Women's Quartz watches Women's watches on sale Women's watches under 200 EUR Men's black watches Men's watches under 400 EUR Men's watches with alarm Women's black watches Women's watches under 400 EUR Women's watches Casio Black Friday Black Friday Unisex Watches Black Friday Ladies Plastic watches Men's plastic watch Watches on Offer Women's watches with alarm Women's watches with date Women's watches with stopwatch CasiOak Men’s Watches Casio Watch gift for woman Casio Laides durable Watches Men's watch with mineral glass Women's watch with mineral glass
Casio, Japan is one of the best-selling watch brands in the world. The first watches from the Casia workshop were digital and at the same time the first in the world to display the date. Casio's digital watches are no longer popular today, although analog watches or watches with a combined time display already form a large part of the range.
Casio has made history with its range of super-durable G-Shock watches, which are equipped with a light but sufficiently durable construction (against falls of up to 10 m, shocks, vibrations, magnetic field and temperature fluctuations) and a great value for money. The glory of the G-Shock watch over time also required a lightweight women's version - Baby-G. The Casio Pro Trek or Casio Edifice outdoor watches are also very popular. Casio does not lag behind in modern technology either, as evidenced by models equipped with Bluetooth technology, the Tough Solar solar drive or the high-precision radio-controlled Wave Ceptor watch.
Helveti.eu is an authorized dealer and specialist of the Casio brand.
Manufacturer information: CASIO Europe GmbH, Casio-Platz 1 D-22848 Norderstedt, Germany / info@casio.de
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1 → We check, clean and set
We will check the functionality, set time, date and clean the watch carefully.
2 → We will carefully pack the watch
So that the watch does not have a chance to be damaged. We use special vacuum pads.
3 → We insure the watch against damage from the carrier
To be sure, we will insure the watch against breakage, so there is nothing to fear.
With each watch, you will receive a gift of your choice from us. Gifts are graduated according to the value of the order.
From €0 = Cleaning cloth, with which you can polish the glass of a watch.
From €100 = Stroke shortener, you can adjust the watch bracelet to your hand.
From €150 = Helveti canvas bag.
From €150 = Credit card knife.
From €170 = Donut watch case.
From €400 = Parker Jotter.
From €600 = knife Mikov 100-NH-2A blue.
From €1000 = Victorinox Waiter knife with 9 functions.
From €1400 = Watchroll for 2pcs.
From €1650 = Helveti leather watch roll.
From €2000 = Leather travel case.
From €2800 = Leatherman REV.
From €4000 = Wooden watch box Helveti.
From €6000 = Watch winder Helveti black.
And on top of that, a 5-year warranty (You can find the terms of the extended warranty here) and free shipping.
You can view the gifts here: