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Casio G-Shock Master OF G

GR-B300H-5AER

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Product description

Casio G-Shock Master OF G GR-B300H-5AER

Casio G-Shock Master OF G GR-B300H-5AER is a solar-powered digital wristwatch with a 54 mm stainless steel case built around an aviation-oriented GRAVITYMASTER design.

The black dial carries a layered construction with three sub-dials at three, six, and nine o'clock, a date window between four and five o'clock, and applied indices alongside large Arabic numerals at six and twelve in a gold-tone metallic finish with luminous filling. The brown resin strap and deeply sculpted brown and gold bezel are integrated into the angular case, measuring 54 mm in diameter and 15 mm thick, with mineral glass over the dial and a buckle fastening at the wrist.

Key Specifications

  • Movement: Solar Quartz
  • Functions: Date, Stopwatch, Stopwatch with Split Time, LED Light
  • Case: Stainless Steel, 54 mm diameter, 15 mm thick
  • Glass: Mineral Glass
  • Water Resistance: 20 ATM - suitable for diving
  • Strap: Resin / Rubber, Brown - Universal strap

The strap width is not specified in the product data. This watch is compatible with any strap labelled as universal, provided it matches the correct lug width - verify sizing before ordering a replacement strap.

G-SHOCK and the GRAVITYMASTER Line

Casio launched G-SHOCK in 1983 with the stated goal of building a watch that would survive being dropped, and the line has since become the foundation of Casio's tough watch identity. The GRAVITYMASTER series sits within G-SHOCK as an aviation-oriented sub-line, designed with a cockpit aesthetic and the rugged performance associated with aircraft instrumentation. Casio describes the GR-B300 series specifically as drawing on aircraft fuselage construction as a material and structural inspiration.

Solar Power and Dive-Rated Durability

The Casio G-Shock Master OF G GR-B300H-5AER runs on solar quartz, eliminating the need for battery replacement as long as the watch receives regular light exposure. At 20 ATM water resistance, it is rated for diving. The stopwatch function includes split-time recording, and LED illumination covers the dial in low light.

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Product specifications

General

SKU
GR-B300H-5AER
EAN
4549526427985
Gender
Man
Warranty
  • (Read more) 2-Year Warranty
    As an authorized dealer, Ditur provides a 2-year warranty covering the product from the date of purchase. This means that you have full international warranty for 2 years, allowing you to file a complaint with any authorized dealer worldwide in case of manufacturing defects.
Brand
Casio

Movement

Watch type
  • (Read more) Wristwatch Digital
    A digital wristwatch displays the time in numbers, typically with hours, minutes, and seconds, on a digital screen. It is easy to read and often equipped with multiple functions.
Movement
  • (Read more) Quartz
    The clockwork is quartz, which means that it is battery powered. A quartz movement is easy to maintain and ensures that the watch is always accurate.
Energy
  • (Read more) Solar
    Solar watches are quartz watches that harvest their energy from light and store it in a rechargeable battery, eliminating the need for battery changes. Manufacturers often equip their watches with small solar panels on the surface of the movement, constructed from two layers of silicon, a material that efficiently absorbs and utilises sunlight and its energy. Once the battery is charged, the watch functions in the same way as any other quartz watch.

Design

Watch Case Colour
Silver
Dial Colour
Black
Bezel Colour
Brown, Gold
Strap Colour
Brown
Strap Material
  • (Read more) Resin
    A resin strap is made from a synthetic material that is highly strong and durable. The material is known for its resistance to wear and ability to retain color and luster over an extended period.
Watch Case Material
Stainless Steel

Size

Case Width
  • (Read more) 54 mm
    The watch case measures 54 mm in diameter. The diameter is measured including the entire bezel and excluding the crown. Half-diameter sizes are rounded to the nearest whole number.
Case Depth
  • (Read more) 15 mm
    The thickness/height of the watch case measures 15 mm from the top of the glass to the bottom of the back case.
Compatible watches/straps
Universal strap
Weight
71 g

Features

Water Resistance
  • (Read more) 20 ATM / 200 meter
    The watch is water resistant to 200 meters of water pressure (20 ATM) under static conditions without movement or temperature fluctuations. This means the watch is resistant to swimming and light diving. However, the watch is not classified as a diver’s watch, and we do not recommend diving deeper than 15 meters while wearing the watch.
Glass
  • (Read more) Mineral Glass
    The watch is equipped with mineral glass, a hardened and heat-treated glass material that provides flexibility, making it more resistant to shattering upon impact. Scratch and wear resistance are measured on the Mohs hardness scale, which ranges from 1 to 10. Mineral Glass ranks at 5-6 on this scale.
Clasp Type
Buckle
Lumen
  • (Read more) LED Light
    The watch is equipped with an LED light that can illuminate the dial or display, so you can always check the time whether it is by day or night.
Functions
  • (Read more) Date
    The watch is equipped with a date display that advances every second time the hour hand passes 12 o'clock. The date display counts up to 31 days and must be manually adjusted in months with fewer than 31 days.
  • (Read more) Stopwatch
    The watch is equipped with a stopwatch function, allowing you to measure precise timing with start, stop, and reset. This is useful for measuring the duration of activities, event times, or training intervals. The stopwatch function adds a practical tool to the watch that can be used in various situations requiring accurate timing.
  • (Read more) Stopwatch With Split Time
    The stopwatch with split time function on a watch allows you to measure time accurately in intervals. The stopwatch can start and stop the time, but with the split time function, you can also record lap times without stopping the total time.

Product Details

Address
Casio-Platz 1, Norderstedt 22848, DE
Contact information
info@casio.de
Manufacturer
Casio Europe GmbH
Specifications may be AI-generated and contain errors.

Delivery & Return

Delivery policy

We always strive to deliver your order quickly and efficiently, so we have carefully selected the best and safest delivery methods and distributors.

At Ditur.com we offer delivery worldwide. We offer the following delivery methods: DHL Express (home delivery), DHL Connect (home delivery) and GLS PrivateDelivery (home)/ParcelShop. The delivery address will determine which delivery methods are available for your package. You can read more about the different distributors and their prices here.

Find the available delivery options in your country below.

Cutoff: DHL 12.00 PM. GLS 9.00 PM CET. *Business days

Country Courier Delivery Time* Price
Denmark (DK) GLS ParcelShop 2 days €5
GLS Home 2 days €7
Finland (FI) Posti 5 days €12
Iceland (IS) DHL Express 3 days €20
Norway (NO) DHL Express 3 days €20
Sweden (SE) Postnord 2 days €5
Country Courier Delivery Time* Price
Austria (AT) GLS Home 3 days €7
DHL Express 3 days €20
Belgium (BE) GLS Home 2 days €5
DHL Express 2 days €20
France (FR) DHL Home 3 days €7
DHL Express 2 days €20
Germany DHL Home 2 days €5
DHL Express 2 days €20
Holland (NL) GLS Home 2 days €5
DHL Express 1 days €20
Ireland (IE) DHL Home 4 days €10
DHL Express 2 days €20
Luxembourg (LU) DHL Home 3 days €7
DHL Express 3 days €20
Monaco (MC) DHL Express 3 days €20
Switzerland (CH) DHL Express 3 days €20
Country Courier Delivery Time* Price
Andorra (AD) DHL Express 3 days €20
Cyprus (CY) GLS Home 5 days €10
DHL Express 3 days €20
Greece (GR) DHL Home 6 days €15
DHL Express 3 days €20
Italy (IT) DHL Home 4 days €10
DHL Express 3 days €20
Malta (MT) GLS Home 5 days €10
DHL Express 3 days €20
Portugal (PT) DHL Home 5 days €7
DHL Express 3 days €20
Spain (ES) DHL Home 4 days €7
DHL Express 3 days €20
Country Courier Delivery Time* Price
Albania (AL) GLS Droppoint 1 days $22
GLS Home 2 days $22
Bosnia-Herzegovina (BA) DHL Express 5 days $20
GLS 6 days $25
Bulgaria (BG) GLS Home 6 days $22
DHL Express 5 days $20
Croatia (HR) GLS 6 days $25
DHL 6 days $25
Czech Republic (CZ) GLS Home 6 days $22
DHL Express 5 days $20
Estonia (EE) GLS 6 days $25
DHL 6 days $25
Hungary (HU) GLS Home 6 days $22
DHL Express 5 days $20
Kosovo (KV) GLS 6 days $25
DHL 6 days $25
Latvia (LV) GLS Droppoint 1 days $22
GLS Home 2 days $22
Liechtenstein (LI) DHL Express 5 days $20
GLS 6 days $25
Lithuania (LT) GLS Home 6 days $22
DHL Express 5 days $20
Montenegro (ME) GLS 6 days $25
DHL 6 days $25
North Macedonia (MK) GLS Home 6 days $22
DHL Express 5 days $20
Poland (PL) GLS 6 days $25
DHL 6 days $25
Romania (RO) GLS Home 6 days $22
DHL Express 5 days $20
Serbia (RS) GLS 6 days $25
DHL 6 days $25
Slovakia (SK) GLS Home 6 days $22
DHL Express 5 days $20
Slovenia (SI) GLS 6 days $25
DHL 6 days $25
Turkey (TR) GLS Home 6 days $22
DHL Express 5 days $20
Ukraine (UA) GLS 6 days $25
DHL 6 days $25
Country Courier Delivery Time* Price
England (GB) DHL Express 5 days $20
GLS 6 days $25
Northern Ireland (GB) GLS 6 days $25
DHL 6 days $25
Scotland (GB) DHL Express 5 days $20
GLS 6 days $25
Wales (GB) GLS 6 days $25
DHL 6 days $25
Country Courier Delivery Time* Price
Canada (CA) GLS Droppoint 1 days $22
GLS Home 2 days $22
Mexico (MX) DHL Express 5 days $20
GLS 6 days $25
USA (US) GLS Home 6 days $22
DHL Express 5 days $20
Country Courier Delivery Time* Price
Other countries DHL Express 5 days $20

Return policy

99 days full return policy!

At Ditur.com we only sell products that we have carefully selected and tested the quality of. Therefore, you get 99 days full return policy when you buy our products.

We trust the quality and prices of our products. That's why we give you plenty of time to consider whether you want to keep your new purchase, so you feel completely safe.

This means that for 99 days from the date of purchase, you can return your goods for a full refund, as long as the product is returned in the original condition in which it was delivered. 

At Ditur, it is important for us to always provide good customer service, so if you need help, our experienced customer service team will be ready to help you. If you are not satisfied with an item, you can easily and simply return your item by filling out and printing a return form, which you can find here.

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