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In stock

mens

CASIO

【Genuine】

G Shock MASTER OF G - AIR GRAVITYMASTER

GR-B300EC-1AJF

49,500Yen
(tax included)

Reference list price:49,500Yen
(tax included)

Inquiry Product ID: W245308

Loan simulation here

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Available areas(Kanto/Tokai/Kansai/Kyushu)

Store nameAvailable dates for visit

Tokyo Yukizaki Main Store
2025/12/11
Ginza Yukizaki
2025/12/11
Ginza Central Street Yukizaki
2025/12/11
Kabukicho Yukizaki
2025/12/11
Yukizaki in front of Midtown
2025/12/11
Tokyo Yukizaki Specialty Museum
2025/12/11
Shibuya Yukizaki
2025/12/11
Omotesando Yukizaki
2025/12/11
Yokohama Motomachi Yukizaki
2025/12/11
Nagoya Yukizaki Main Store
2025/12/11
Osu Yukizaki
2025/12/11
Nishiki Yukizaki
2025/12/11
Kitashinchi Yukizaki
2025/12/11
Shinsaibashi Yukizaki
2025/12/11
Shinsaibashi Shopping Arcade Yukizaki
2025/12/11
Kobe Yukizaki
2025/12/11
Fukuoka Yukizaki Main Store
2025/12/11
Fukuoka Yukizaki Select Building
2025/12/11
Nakasu Yukizaki
2025/12/11
Kumamoto Yukizaki
2025/12/11

*If you would like to visit on the day, please contact us via LINE or phone (10:30-19:30)

Contact Us

Payment and Returns

Payment method

Bank transfer
loan

Regarding the use of virtual currency at all Gem Castle Yukizaki stores

About returns

We make every effort to ensure the quality and packaging of the products purchased by mail order, but if there is any damage or malfunction upon arrival, please contact us within 2 days.
Refund will be made only when unused.
In addition, we will not accept returns of used products for reasons other than the above, customer convenience, and used products.
We cannot accept returns or exchanges after adjusting the breath. Please note.

Shopping loan simulation

*The simulation results are only an estimate and may differ from the actual repayment amount.
*You cannot set a repayment amount that is less than 3,000 yen per month.

Sales price

Yen

down payment

Yen

Number of payments

No interest rate

times

payment(First time)

Yen

Payment amount (2nd and subsequent payments)

Yen

shopping guide

About size correction

Wrapping service

Warranty / Product status

* This page uses automatic translation. The product information may be incorrect. Please email us for accurate product information.

Casio 【Genuine】 CASIO G Shock MASTER OF G - AIR GRAVITYMASTER GR-B300EC-1AJF Description

Specifications Basic information Release date
August 2024 MSRP: ¥49,500 (tax included)
Case size (length x width x thickness)
icon-question
59 x 54.7 x 15.7 mm
mass
icon-question
71 g
Case and bezel material Carbon (biomass plastic) / Resin (biomass plastic) / Stainless steel Band Resin band (biomass plastic)
Structure Impact resistant structure (shock resist)
Carbon Core Guard construction, waterproof
20 ATM water resistance Time adjustment
Bluetooth: Connects to smartphone and automatically adjusts time Power supply and battery life: Tough Solar (solar charging system)
Mobile Link/App Linkage FunctionMobile Link FunctionMobile Link Function (function linkage via Bluetooth communication with compatible mobile phones)
Compatible with the app "CASIO WATCHES" App linking function Automatic time correction Easy clock setting World time Approximately 300 cities Flight log Mobile phone search Exterior glass Inorganic glass Crown Screw-lock type Crown Surface treatment Black IP (bezel part)
Band size available
145 to 215 mm
Other Neobrite Clock Functions World Time Dual Time (with time swap function with home time)
Stopwatch Stopwatch (1 second, 24 hour, split)
Timer Timer (set unit: 1 minute, maximum set: 24 hours, measured in 1 second units)
Alarm time alarm light
LED light (Super Illuminator, with afterglow function)
Light Color
LED: White Calendar Full auto calendar Power saving function Power saving function (Hands will stop moving after a certain period of time in a dark place to save power)
Battery display/warning Battery indicator display Operating time Operating time from full charge without solar power generation When using functions: Approximately 5 months When in power saving mode: Approximately 18 months Accuracy * When not linked to a smartphone, it will operate with normal quartz accuracy (average monthly difference of ±15 seconds).
Other functions: Date and day of the week display

* This page uses automatic translation. The product information may be incorrect. Please email us for accurate product information.

Product details information

Material

carbon resin stainless

Case size

vertical about59.0 × beside about54.7mm

accessories

International guarantee (guarantee) / Genuine box / instruction manual

Rank

New [N]

Inquiry Product ID

W245308

Product name

G Shock MASTER OF G - AIR GRAVITYMASTER

Brand name

Casio

Model name

G Shock

Model number

GR-B300EC-1AJF

type

mens

Material

carbon resin stainless

Case size

vertical about59.0 × beside about54.7mm

Movement

solar

waterproof

200m waterproof

Text plate

Text dial color

accessories

International guarantee (guarantee) / Genuine box / instruction manual

Payment and Returns

Payment method

Bank transfer
loan

Regarding the use of virtual currency at all Gem Castle Yukizaki stores

About returns

Shopping loan simulation

*The simulation results are only an estimate and may differ from the actual repayment amount.
*You cannot set a repayment amount that is less than 3,000 yen per month.

Sales price

Yen

down payment

Yen

Number of payments

No interest rate

times

payment(First time)

Yen

Payment amount (2nd and subsequent payments)

Yen

shopping guide

About size correction

Wrapping service

Warranty / Product status

Please check before ordering or visiting

If you would like to visit our store, please check the stock before visiting.
Products on this site are also sold at physical stores, so please check the stock in advance. In addition, please forgive that we will cancel your order when sold out.
Some accessories may not be available due to distribution circumstances.
Depending on the product, there may be a difference between the posted image and the actual item due to minor changes.
Depending on the environment of your device, there may be slight differences in the color of the actual product and the image shown.
Prices are subject to change without notice.
The product information posted on this site is accurate, but we do not guarantee it.

About waterproof function

Water resistance is effective for watches with a pressure of less than 5 atm in daily life, but the packing that plays the role of water resistance requires caution against excessive use of detergents. A watch with a water resistance of 10 to 20 bar or less is suitable for water sports, but for leisure such as scuba diving, we recommend a watch with a water resistance of 100 m. Models manufactured before 2000, such as antiques, may not maintain their waterproof function due to various reasons such as deterioration over time. Even if it is a waterproof watch for 200m, please be careful when using it in a wet place.

Email settings

If you are using carrier mail such as Softbank, docomo, or au, the mail may not be delivered properly depending on the settings of the junk mail filter. It may be classified as a junk mail folder, so please check it once. Please contact your mobile phone company for reception rejection settings and filter cancellation.