What payment methods are available on Joom?

Joom supports a wide range of local and international payment methods for European shoppers, including debit and credit cards (Visa, Mastercard, Maestro), PayPal, Apple Pay, and Google Pay, plus country-specific options such as Klarna, BLIK, Multibanco, MB WAY, SEPA, and Giropay. Available options are shown at checkout and vary by country.

Can I pay for an expensive purchase in installments or later?

Yes, buy-now-pay-later services such as Klarna and Scalapay are available for some higher-value purchases, depending on your country, order amount, and the provider's terms.

Can I track my order?

Yes. You can follow its delivery status in the Joom app or on the website, updated as the package moves.

What happens if my order doesn't arrive?

Every order is covered by Joom Delivery Guarantee. If your order doesn't arrive by the guarantee date shown in your order details, contact Joom support and we'll issue a full refund.

Is it safe to pay on Joom?

Yes. Joom uses a secure payment system, and the seller isn't paid until you've received your order, which adds an extra layer of purchase protection.

What if my order doesn't arrive or the product isn't as expected?

If your order wasn't delivered, arrived damaged, or doesn't match its description, contact Joom support — a full refund can be issued in these cases.

How do I request a refund?

Requesting a refund is quick and straightforward. Just head to your order in the Joom app or website, open the Support Chat, and let us know what happened. Our team will take it from there and get back to you with a resolution as quickly as possible.

G-SHOCK

Casio G-SHOCK Gravitymaster GR-B300H-5AJF Bluetooth Solar Watch Domestic

Name: Casio G-SHOCK Gravitymaster GR-B300H-5AJF Bluetooth Solar Watch Domestic
SKU: 6a74a895efe00901fdc24a4e
Price: 358.97 EUR
Availability: InStock
Rating: 5 (30 reviews)

Current price

Price €358.97

‌

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Free delivery to the United States

21 October

Delivered from Japan

Secure checkout & data protection

No-delivery refund

Quality guarantee

Secure logistics

Privacy protection

Description

[Product Description]

Description

From the G-SHOCK MASTER OF G series designed for use in harsh environments, we introduce the MASTER IN HORIZON GOLD, inspired by the golden horizon where land and sky meet, evoking the beginning of endless exploration. Based on the models MUDMAN GW-9500, MUDMASTER GG-B100 with land concept, and GRAVITYMASTER GR-B300 with sky concept, each model features a metal bezel with light yellow gold IP coating and metal parts with brown IP accents, combined with a dark brown resin band to express the power of nature.

The GW-9500MH-5 features shock resistance, dust and mud resistance, radio solar power, and triple sensors. It measures direction, altitude/pressure, and temperature to support activities in extreme environments. The duplex LCD with enhanced visibility of the compass display improves the practicality of the digital compass.

The GG-B100XMH-5A has a stainless steel bezel for a refined texture. The case uses carbon fiber reinforced resin to prevent damage and deformation, ensuring high airtightness and shock resistance. It also includes a mud intrusion prevention filter and a fiberglass reinforced resin back cover for durability. Functionally, it measures direction, altitude/pressure, temperature, and step count. It features easy time setting via a dedicated app, and can automatically record the altitude data from the watch and route data from a smartphone into the app, supporting quick decision-making and precise actions.

The GR-B300H-5A adopts a 'Carbon Core Guard' structure for shock resistance. The case made of carbon fiber reinforced resin combined with a seamless bezel inspired by next-generation aircraft creates a powerful form. It includes a home time switching function and dual time function, useful for international travel. The large, three-dimensional hour markers and wide face are enhanced with a metal bezel for better visibility and functionality. The disk hand on the 9 o'clock side uses a dual-coil motor to pursue smooth movement and aesthetic design. It also features an alarm ON/OFF, stopwatch, and functions as a battery indicator.

MASTER OF G MASTER IN HORIZON GOLD is a tough watch that delivers high performance in extreme environments while maintaining a refined feel.

● Shock resistant structure ● Tough Solar (solar charging system) ● 20 ATM water resistance ● Mobile Link function (Bluetooth® communication with compatible smartphones) ● Dual Time (time switching with home time) ● Stopwatch (1 second, 24-hour, split function) ● Timer (set in 1-minute units, up to 24 hours, measured in 1-second units) ● Time alarm ● Battery level indicator ● Power saving function (stops movement after a period of darkness to save power) ● Full auto calendar ● Date and day display ● LED light (Super Illuminator with afterglow function) ● Approximate battery life: about 5 months with full charge, about 18 months in power-saving mode without solar power

* When not linked with a smartphone, it operates with standard quartz accuracy (average monthly deviation ±15 seconds).

From the G-SHOCK MASTER OF G series designed for extreme environments, we introduce the MASTER IN HORIZON GOLD, inspired by the golden horizon where land and sky meet, evoking the beginning of endless exploration. [Shock resistance & 20 ATM water resistance] Features a shock-resistant structure and 20 ATM water resistance, suitable for various locations and situations. [Tough Solar] Uses Casio's proprietary solar charging system with a solar panel that generates power from minimal light and a large secondary battery for stable operation of demanding functions. [Mobile Link Function] Can connect via Bluetooth® with compatible smartphones for feature synchronization. [Other specifications] Please see the description for details.

[Important Notice - For Overseas Customers]

Thank you for purchasing this product. Before using it overseas, please carefully read the following important notices.

1. Laws, Regulations, and Safety Standards This product complies with Japanese safety standards. Before use in your country, please check its compliance with local laws, regulations, and safety standards. Certain product categories (electronics, cosmetics, food, etc.) may require certification in the importing country.

2. Regarding Electrical Products 【Voltage Compatibility】 When using electrical products, please note that they are designed to match Japanese voltage specifications (90-110V). Using them with a different voltage may cause malfunction.

【Plug Type】 Our products use Japanese plug types (Type A or Type B). Please use a conversion adapter as needed.

【Important Notes Regarding Transformers and Adapters】 Transformers adjust the voltage to match the requirements of the equipment. Conversion adapters only change the plug shape and do not adjust the voltage. Using only a conversion adapter without a transformer may damage the product.

[Regarding Liability] We are not responsible for any malfunctions or damage caused by improper use, such as operating the product without a transformer.

3. Language and Manual Product instructions and displays may be in Japanese only. An English version of the manual can be downloaded from our website.

4. Regarding Product Returns and Exchanges Please note that if you wish to return or exchange a product, you will be required to submit a video of the unpacking process.

Samurai Watch Japan

5.0

reviews

292

purchases

Seller's info and responsibility

Frequently asked questions

What payment methods are available on Joom?
Joom supports a wide range of local and international payment methods for European shoppers, including debit and credit cards (Visa, Mastercard, Maestro), PayPal, Apple Pay, and Google Pay, plus country-specific options such as Klarna, BLIK, Multibanco, MB WAY, SEPA, and Giropay. Available options are shown at checkout and vary by country.
Can I pay for an expensive purchase in installments or later?
Yes, buy-now-pay-later services such as Klarna and Scalapay are available for some higher-value purchases, depending on your country, order amount, and the provider's terms.
Can I track my order?
Yes. You can follow its delivery status in the Joom app or on the website, updated as the package moves.
What happens if my order doesn't arrive?
Every order is covered by Joom Delivery Guarantee. If your order doesn't arrive by the guarantee date shown in your order details, contact Joom support and we'll issue a full refund.
Is it safe to pay on Joom?
Yes. Joom uses a secure payment system, and the seller isn't paid until you've received your order, which adds an extra layer of purchase protection.
What if my order doesn't arrive or the product isn't as expected?
If your order wasn't delivered, arrived damaged, or doesn't match its description, contact Joom support — a full refund can be issued in these cases.
How do I request a refund?
Requesting a refund is quick and straightforward. Just head to your order in the Joom app or website, open the Support Chat, and let us know what happened. Our team will take it from there and get back to you with a resolution as quickly as possible.

Reviews 30

Customer

May 19

I bought Casio G-SHOCK Gravitymaster GR-B300H-5AJF Bluetooth Solar Watch Domestic and paid with Klarna, which made the purchase feel really convenient and safe. The item arrived in around two weeks and was exactly as shown.

Customer

June 1

I bought Casio G-SHOCK Gravitymaster GR-B300H-5AJF Bluetooth Solar Watch Domestic and paid using Klarna, which was very convenient. The item arrived in about two weeks and matched the photos perfectly.

Customer

June 30

I ordered Casio G-SHOCK Gravitymaster GR-B300H-5AJF Bluetooth Solar Watch Domestic and the delivery experience was great. I could see where my package was in the app, which made the whole process feel much safer.

Customer

October 18

I ordered Casio G-SHOCK Gravitymaster GR-B300H-5AJF Bluetooth Solar Watch Domestic and I'm very satisfied. The product matches the pictures, the quality is good, and it arrived in less than three weeks.

Customer

June 4

I ordered Casio G-SHOCK Gravitymaster GR-B300H-5AJF Bluetooth Solar Watch Domestic and was able to track the package throughout the delivery. It arrived after around three weeks and the product matched the photos very well.

Customer

June 27

I ordered Casio G-SHOCK Gravitymaster GR-B300H-5AJF Bluetooth Solar Watch Domestic and it arrived in around 2–3 weeks. The product looks exactly like the photos and feels well made.

Customer

July 9

I got Casio G-SHOCK Gravitymaster GR-B300H-5AJF Bluetooth Solar Watch Domestic and I'm happy with the purchase. It arrived within 2–3 weeks and looked exactly like the product images.

Customer

August 26

I got Casio G-SHOCK Gravitymaster GR-B300H-5AJF Bluetooth Solar Watch Domestic and I liked how transparent the delivery process was. I could track my order in the app and the item arrived exactly as expected.

Customer

July 18

I got Casio G-SHOCK Gravitymaster GR-B300H-5AJF Bluetooth Solar Watch Domestic and it was exactly what I was hoping for. Delivery took about two weeks and I could follow every update in the app.

Customer

September 5

I got Casio G-SHOCK Gravitymaster GR-B300H-5AJF Bluetooth Solar Watch Domestic and paid with Klarna, which gave me a nice feeling of security. The delivery was fast and the item arrived in great condition.

Customer

May 25

I got Casio G-SHOCK Gravitymaster GR-B300H-5AJF Bluetooth Solar Watch Domestic and everything was exactly as described. It arrived safely after around three weeks and the quality is better than I expected.

Customer

October 10

I bought Casio G-SHOCK Gravitymaster GR-B300H-5AJF Bluetooth Solar Watch Domestic and unfortunately decided I wanted a refund. Asking for it was really simple, and the money was returned about two hours after approval.

Customer

October 12

I ordered Casio G-SHOCK Gravitymaster GR-B300H-5AJF Bluetooth Solar Watch Domestic and I'm satisfied with my purchase. The product is good quality and looks exactly like the pictures, while the delivery took only around 2–3 weeks.

Customer

May 28

I ordered Casio G-SHOCK Gravitymaster GR-B300H-5AJF Bluetooth Solar Watch Domestic and everything went as expected. I liked being able to follow the delivery status directly in the app, and the package arrived in about three weeks.

Customer

August 21

I bought Casio G-SHOCK Gravitymaster GR-B300H-5AJF Bluetooth Solar Watch Domestic and had a great experience overall. I paid with Klarna and felt comfortable knowing I had an easy payment option.

Customer

July 24

I got Casio G-SHOCK Gravitymaster GR-B300H-5AJF Bluetooth Solar Watch Domestic, but unfortunately it wasn't what I needed, so I requested a refund. The process was very easy and I received the money about two hours after the refund was approved.

Customer

September 1

I bought Casio G-SHOCK Gravitymaster GR-B300H-5AJF Bluetooth Solar Watch Domestic and was happy with the whole experience. The delivery was easy to track in the app, and the item arrived in about two weeks.

Customer

August 9

I got Casio G-SHOCK Gravitymaster GR-B300H-5AJF Bluetooth Solar Watch Domestic and I'm happy with both the item and the service. Everything was easy to understand, and the delivery was faster than I expected.

Customer

July 26

I bought Casio G-SHOCK Gravitymaster GR-B300H-5AJF Bluetooth Solar Watch Domestic and had a really smooth experience. I used Klarna for payment, tracked the order in the app, and received the item in about two weeks.

Customer

April 28

I got Casio G-SHOCK Gravitymaster GR-B300H-5AJF Bluetooth Solar Watch Domestic and the whole experience felt reliable and straightforward. I could track my delivery in the app, and the item arrived on time and exactly as described.

Customer

May 6

I bought Casio G-SHOCK Gravitymaster GR-B300H-5AJF Bluetooth Solar Watch Domestic and I'm really happy with the quality. It arrived in about two weeks and looked exactly like the pictures.

Customer

September 25

I ordered Casio G-SHOCK Gravitymaster GR-B300H-5AJF Bluetooth Solar Watch Domestic and the whole experience was smooth. Delivery took around 2–3 weeks, and I could easily track the package in the app.

Customer

May 7

I got Casio G-SHOCK Gravitymaster GR-B300H-5AJF Bluetooth Solar Watch Domestic and was pleasantly surprised by the quality. It matched the photos perfectly and arrived faster than I expected.

Customer

August 6

I got Casio G-SHOCK Gravitymaster GR-B300H-5AJF Bluetooth Solar Watch Domestic and I'm very satisfied with the purchase. The quality is good, the item looks like the pictures, and delivery was surprisingly quick.

Customer

September 23

I ordered Casio G-SHOCK Gravitymaster GR-B300H-5AJF Bluetooth Solar Watch Domestic and I'm really pleased with it. Good quality, accurate pictures, and fast delivery for an international order.

Customer

August 7

I ordered Casio G-SHOCK Gravitymaster GR-B300H-5AJF Bluetooth Solar Watch Domestic and had a very positive experience. The package arrived in around two weeks, and the product quality was really good.

Customer

July 18

I bought Casio G-SHOCK Gravitymaster GR-B300H-5AJF Bluetooth Solar Watch Domestic and everything felt secure from the payment to the delivery. I used Klarna and was happy with how easy the whole purchase was.

Customer

September 8

I bought Casio G-SHOCK Gravitymaster GR-B300H-5AJF Bluetooth Solar Watch Domestic and the refund process was much easier than I expected. I submitted the request easily and received the refund around two hours after it was approved.

Customer

May 6

I ordered Casio G-SHOCK Gravitymaster GR-B300H-5AJF Bluetooth Solar Watch Domestic and I'm really happy with the experience. The item arrived in 2–3 weeks and there was no difference between the pictures and the actual product.

Customer

June 21

I bought Casio G-SHOCK Gravitymaster GR-B300H-5AJF Bluetooth Solar Watch Domestic and the quality is excellent for the price. It arrived in about two weeks and looks just like it did online.