| Movement | Solar |
| Case material | Plastic |
| Crystal material | Mineral |
| Weight | 71 g |
| Waterproof | 200 m |
Movement
Solar
Case material
Plastic
Crystal material
Mineral
Weight
71 g
Waterproof
200 m
The Casio G-Shock Gravitymaster GR-B300H-5AER Horizon Gold is a watch that feels right at home in extreme conditions, offering a host of features and a modern design, all backed by high durability thanks to its rugged case construction.
The Horizon Gold series draws inspiration from the golden horizon—the point where the earth meets the sky at a specific time of day. This theme is also reflected in the watch’s color scheme, which combines gold accents—such as the steel bezel—with a brown base.
The Casio G-Shock Gravitymaster GR B300-5A, as we’ve come to expect from the series, features a build quality that allows the watch to withstand even the harshest conditions. It excels in resistance to shocks, low temperatures, and water. Its high durability is ensured by the Carbon Core Guard case construction. This is made of resin reinforced and strengthened with carbon fiber to increase durability. This design allows for a more compact and lightweight watch.
The watch features an analog dial displaying the date, day of the week,stopwatch,alarm, and countdown timer. Another key feature is the ability to sync the watch with a smartphone via Bluetooth. This connection, combined with the use of the corresponding mobile app (CASIO WATCHES), allows you to keep track of the current and accurate time at all times, offers the ability to easily set dual time by selecting one of 300 cities worldwide, set a daily alarm, and more, as well as the ability to record your current location (Flight Log) along with the date and time while traveling. The recorded location data can then be viewed on a map in the CASIO WATCHES app after pairing the watch with your phone.
The watch’s composite case is complemented by a resin strap that offers excellent durability and a long service life; thanks to the materials used, the watch weighs a comfortable 71 grams.
The dial is covered by a mineral crystal, protected by the raised case. For easy readability in low-light conditions, the watch is equipped with hands featuring a luminescent coating and LED illumination. A key feature of the watch is its combination of solar power with the option of low-energy Bluetooth connectivity to your phone. With a case diameter of 54.7 mm, it ranks among the larger watches. This model is water-resistant to 200 m, so you can swim with it without any problems.
Features:
The Casio G-Shock series offers the perfect watch for anyone looking for a combination of durable, sporty watches with an attractive design and a wide range of features. All models in this globally popular series are more resistant to shocks and impacts than standard watches. They also demonstrate increased resistance to magnetic fields.
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| Brand | Casio |
| Gender | Male |
| Style | Pilot, Sports |
| Origin | Japanese |
| Guarantee | 5 years |
| Waterproof | 200 m |
| Weight | 71 g |
| Movement | Solar |
| Caliber | 5719 |
| Movement accuracy in seconds | ±15 sec. / month |
Power Reserve ![]() |
5 months without access to light, 18 months in power saving mode |
Stopwatch measurement accuracy ![]() |
1/1 sec. |
| Case size | 54,7 mm |
Lug-to-lug: ![]() |
59 mm |
| Case height | 15,7 mm |
| Case shape | Round |
| Case material | Karbon, Epoxidová pryskyřice |
| Case color | Brown |
| Crystal material | Mineral |
| Dial | Analog |
| Dial color | Black |
| Strap material | Resin |
Buckle ![]() |
Tang Buckle |
| Strap color | Brown |
Alarm clock ![]() |
Yes |
| Date | Yes |
Dual time ![]() |
Yes |
| Backlight | Yes |
Stopwatch ![]() |
Yes |
Day of the week indicator ![]() |
Yes |
| Functions | Date, Day of the week, Stopwatch, Alarm clock, Screw-on crown, Backlight, Automatic calendar, Dual time / GMT, World times |
Accumulator ![]() |
Yes |
Luminescence ![]() |
Hands and indexes |
| Other functions | Countdown, World time, Automatic LED light, 12/24 mode, Automatic calendar, Bluetooth, Low battery indication, Phone finder |
We guarantee the accuracy of the data. Did you find a mistake? Let us know and get 200 CZK 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 Men's Japanese watch Men's sports watches Men's watches with date Men’s Watches Casio Men’s watches Casio G-Shock Men's black watches Men's solar watches Men's watches under 400 EUR Men's watches with alarm Men's pilot's watches Men's watches novelties Men's plastic watch Men's watches with GMT (second time zone) Gravitymaster Men's brown watches Men’s watches Casio Gravitymaster Men's durable watches Casio Men'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: