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In stock

mens

Casio Citizen 7 year warranty campaign

CASIO

【Genuine】

G Shock 2100 Series

GM-2100-1AJF

30,250Yen
(tax included)

Retail price:30,250Yen
(tax included)

Inquiry Product ID: GM-2100-1AJF

Loan simulation here

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Available areas(Kanto/Tokai/Kansai/Kyushu)

Store nameAvailable dates for visit

Tokyo Yukizaki Main Store
2026/03/13
Ginza Yukizaki
2026/03/13
Ginza Central Street Yukizaki
2026/03/13
Kabukicho Yukizaki
2026/03/13
Yukizaki in front of Midtown
2026/03/13
Tokyo Yukizaki Specialty Museum
2026/03/13
Shibuya Yukizaki
2026/03/13
Omotesando Yukizaki
2026/03/13
Yokohama Motomachi Yukizaki
2026/03/13
Nagoya Yukizaki Main Store
2026/03/13
Osu Yukizaki
2026/03/13
Nishiki Yukizaki
2026/03/13
Kitashinchi Yukizaki
2026/03/13
Shinsaibashi Yukizaki
2026/03/13
Shinsaibashi Shopping Arcade Yukizaki
2026/03/13
Kobe Yukizaki
2026/03/13
Fukuoka Yukizaki Main Store
2026/03/13
Fukuoka Yukizaki Select Building
2026/03/13
Nakasu Yukizaki
2026/03/13
Kumamoto Yukizaki
2026/03/13

*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 2100 Series GM-2100-1AJF Description

It is a model that uses metal material from the GA-2100 series that inherits the "octagonal form" that was also used in the first model "DW-5000C" of G-SHOCK.
A hard stainless steel material is used for the bezel cover. The stainless steel bezel has a circular hairline finish for a chic design. In addition, the dial is vapor-deposited to sharpen and stylishly enhance the simple design that is typical of the GA-2100. Furthermore, the texture of the checkered pattern that gradually changes is casually put in the band, and the high quality is added to the resin band with a casual impression. While maintaining the concept inherited from the first generation, this model pursues quality as a watch and refines the exterior and wearability.

Other

Specifications Basic information Release date
August 2021 Manufacturer's Suggested Retail Price: ¥30,250 (tax included)
Case size (length x width x thickness)
49.3 × 44.4 × 11.8 mm
mass
72 g
Case/Bezel Material: Resin/Stainless Steel Band: Resin Band Structure: Shock Resistant (Shock Resist)
waterproof
20 ATM water resistance Power supply / battery life Battery life: Approximately 3 years Exterior glass Mineral glass Band size
145 to 215 mm
Other Neobrite Clock Functions World Time World Time: 48 cities (31 time zones, daylight saving time setting function) + UTC (Coordinated Universal Time) time display Stopwatch Stopwatch (1/100 second (less than 1 hour) / 1 second (more than 1 hour), 24 hour counter, with split)
Timer (set unit: 1 second, maximum set: 24 hours, measured in 1-second increments)
5 alarms, hourly time signal, double LED light: LED light for dial (Super Illuminator, afterglow function, selectable afterglow time (1.5 seconds/3 seconds)), LED backlight for LCD (Super Illuminator, afterglow function, selectable afterglow time (1.5 seconds/3 seconds))
Light Color
LED: White Calendar Fully automatic calendar Operation sound ON/OFF switch function Operation sound ON/OFF switch function Accuracy Average monthly difference: ±15 seconds Other functions
12/24 hour display switching Hand retraction function (When the hands overlap with the LCD display and are difficult to see, the hands can be temporarily retracted from above the LCD display)

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

Product details information

Material

accessories

Genuine box / Warranty

Rank

New [N]

Authentic

If we do not have the item in stock, we will order it from the manufacturer, so it will take about 1 to 3 weeks to deliver. Also, there may be cases where the manufacturer does not have the item in stock. Thank you for your understanding.

*Please contact us for details.
*We may cancel your order depending on stock availability.

Inquiry Product ID

GM-2100-1AJF

Product name

G Shock 2100 Series

Brand name

Casio

Model name

G Shock

Model number

GM-2100-1AJF

type

mens

Material

Movement

Text plate

Text dial color

accessories

Genuine box / Warranty

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.