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Casio Casio G-shock GA-2100-1A1ER

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25 listings including promoted listings
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Casio GA-2100-1A1ER Plastic G-Shock 48.5mm pre-owned United States of America, New Jersey, Englewood
Casio G-Shock
GA-2100-1A1ER
$85
Excl. shipping
Private Seller
Casio GA-2100-1A1ER Plastic G-Shock 48.5mm new
Casio G-Shock
Ref. GA-2100-1A1ER Black Dial Black Rubber Strap
$94
+ $54 for shipping
Casio GA-2100-1A1ER Plastic 2022 G-Shock 48.5mm new
Popular
Casio G-Shock
GA-2100-1A1ER
$1,706
Excl. shipping
Private Seller
Casio GA-2100-1A1ER Plastic 2021 G-Shock 48.5mm new
Casio G-Shock
MilkyWay IFL Limited Edition
$1,276
Excl. shipping
Private Seller
Casio GA-2100-1A1ER Plastic 2021 G-Shock 48.5mm new
Casio G-Shock
White IFLW Limited Edition Milkyway
$1,099
Excl. shipping
Private Seller
Casio GA-2100-1A1ER Plastic 2022 G-Shock 48.5mm new
Casio G-Shock
GA-2100-1A1ER
$715
Excl. shipping
Private Seller
Casio GA-2100-1A1ER Plastic 2023 G-Shock 48.5mm new
Casio G-Shock
GA-2100-1A1ER
$539
Excl. shipping
Private Seller
Casio GA-2100-1A1ER Carbon 2022 G-Shock 48.5mm new
Popular
Casio G-Shock
GA-2100-1A1ER
$426
Excl. shipping
Private Seller
Casio GA-2100-1A1ER Plastic G-Shock 48.5mm new
Casio G-Shock
bronze limited edition
$330
Excl. shipping
Private Seller
Casio GA-2100-1A1ER Carbon 2023 G-Shock 48.5mm new
Casio G-Shock
GA-2100-1A1ER
$330
Excl. shipping
Private Seller
Casio GA-2100-1A1ER Plastic 2022 G-Shock 48.5mm new
Casio G-Shock
GA-2100-1A1ER Rainbow Index Custom
$261
Excl. shipping
Private Seller
Casio GA-2100-1A1ER Plastic 2022 G-Shock 48.5mm new
Casio G-Shock
GA-2100-1A1ER Rainbow Index Custom
$217
Excl. shipping
Private Seller
Casio GA-2100-1A1ER 2023 G-Shock 48mm new
Casio G-Shock
GA-2100-1A1ER
$90
+ $385 for shipping
Casio GA-2100-1A1ER Plastic 2022 G-Shock 48.5mm new
Casio G-Shock
ROYAL OAK
$395
+ $219 for shipping
Casio GA-2100-1A1ER Plastic G-Shock 45.4mm new
Casio G-Shock
GA-2100-1A1ER G-Shock Ana-Digi Herren-Armbanduhr Schwarz
$109
+ $46 for shipping
Casio GA-2100-1A1ER Plastic 2022 G-Shock 48.5mm new
Casio G-Shock
"CasiOak" - GA-2100-1A1ER
$99
+ $439 for shipping
Casio GA-2100-1A1ER Plastic 2022 G-Shock 48.5mm new
Casio G-Shock
Casioak Casi-oak custom mod inferno
$298
+ $52 for shipping
Casio GA-2100-1A1ER Plastic 2023 G-Shock 48.5mm new
Casio G-Shock
Casioak limited edition 50 pcs
$385
+ $39 for shipping
Casio GA-2100-1A1ER Steel 2022 G-Shock 48.5mm new
Casio G-Shock
GA2100 - Casilus / Casioak custom mod style
$360
+ $65 for shipping
Casio GA-2100-1A1ER Plastic 2023 G-Shock 48.5mm new
Casio G-Shock
Casioak limited edition 50 pcs
$319
+ $39 for shipping
Casio GA-2100-1A1ER Plastic 2022 G-Shock 48.5mm new
Casio G-Shock
ROYAL OAK
$395
+ $219 for shipping
Casio GA-2100-1A1ER Steel 2022 G-Shock 48.5mm new
Popular
Casio G-Shock
Casioak / Casio Oak - custom mod - Tiffany Blue
$334
+ $65 for shipping
Casio GA-2100-1A1ER Plastic 2022 G-Shock 48.5mm new
Casio G-Shock
Casioak / Casio Oak - custom mod - Red Devil
$334
+ $65 for shipping
Casio GA-2100-1A1ER Plastic 2022 G-Shock 48.5mm new
Popular
Casio G-Shock
Casioak / Casio oak - custom mod - rainbow
$281
+ $65 for shipping
Casio GA-2100-1A1ER Plastic 2022 G-Shock 48.5mm new
Casio G-Shock
ROYAL OAK
$395
+ $219 for shipping

More Information About the Casio Casio G-shock GA-2100-1A1ER

Basic Info
Brand Casio
Model G-Shock
Reference number GA-2100-1A1ER
Movement Quartz
Case material Carbon, Plastic, Steel
Bracelet material Plastic, Rubber, Steel
Year of production 2021, 2022, 2023
Gender Men's watch/Unisex
Location France; Germany; Hong Kong; Italy; Spain
Caliber
Movement Quartz
Case
Case material Carbon, Plastic, Steel
Case diameter 48.5 x 45.4 mm
Water resistance 20 ATM
Crystal Mineral Glass
Dial Black, Grey
Bracelet/strap
Bracelet material Plastic, Rubber, Steel
Bracelet color Black, Grey, Silver, Steel
Clasp material Aluminum, Steel
Functions
Functions Alarm, Annual calendar, Chronograph, Date, Weekday

High-Tech Classic: Casio G-Shock GA-2100-1A1ER

The Casio G-Shock GA-2100-1A1ER has a classic design, and is also lightweight and casual. This all-arounder comes with digital and analog displays and numerous other functions. It is thus a great watch for people with active lifestyles.


GA-2100-1A1ER: Vintage and Sleek

Ever since Casio launched the DW-5000C in 1983, G-Shock has been a synonym for durable, shock-resistant timepieces with high functionality. Meanwhile, the Japanese tech giant has sold over 100 million watches under the G-Shock name, making it one of the manufacturer's most successful collections.

The Casio G-Shock ref. GA-2100-1A1ER is part of the Classic collection and is held in high esteem by Casio fans. The watch's design takes inspiration from the first generation DW-5000C models: It keeps the same octagonal shape, but is flatter and lighter, without jeopardizing the watch's robust structure. Another difference from the model's direct ancestor is that Casio gave the GA-2100-1A1ER both an analog and a digital time display.

Casio watches in the GA-2100 series (as well as in the GM-2100 and GA-B2100 series, which came later) were given the nickname CasiOak. This is easily seen in their resemblance to the famous Royal Oak from Audemars Piguet, owing mostly to the octagonal bezel and integrated bracelet. The GM-2100 is the stainless steel version of the GA-2100. The GA-B2100 was the first version to be solar-powered and Bluetooth-compatible.

Reasons to Buy a Casio G-Shock GA-2100-1A1ER

  • Innovative, high-tech watch from Japan
  • Digital and analog time displays
  • Robust and reliable everyday watches
  • Practical features for active lifestyles
  • Water-resistant to 200 m (20 bar, 656 ft)
  • Affordable model

About the Casio G-Shock GA-2100-1A1ER

The 48.5-mm case of the Casio G-Shock GA-2100-1A1ER is made of a combination of synthetic resin and carbon. With a thickness of 11.8 mm and a weight of 51 g, this reference is thinner and lighter than the original from 1983. The heavy-duty material can withstand strong jolts and extreme temperatures.

The G-Shock pulls out all the stops to combine many useful functions in one watch. You can read the time in 31 time zones with the GA-2100-1A1ER, and switch daylight savings on and off. The watch also has a perpetual calendar (up to the year 2099) as well as a stopwatch function, timer, and five daily alarms. The stopwatch function can also display 1/100ths of a second, split times, and 1st and 2nd place times.

The actual time is shown via the analog display (two hands for the hours and minutes), while the LED screen shows the hours, minutes, seconds, 12-hour display, month, and date digitally. The hands and indices are luminous and glow in the dark. The digital display also has a backlight that can be turned on and off.

The unisex watch is equipped with a robust and scratch-resistant mineral crystal and offers water resistance to 200 m (20 bar, 656 ft), making it perfectly suitable for free diving. The battery life is approximately three years. Casio states that the deviation of the quartz movement is +/- 15 seconds per month.

Casio G-Shock GA-2100-1A1ER: Specs

  • Dimensions: 48.5 x 45.4 x 11.8 mm
  • Material: resin and carbon
  • Strap: resin
  • Dial: black
  • Movement: quartz, battery-powered
  • Water resistance: 200 m (20 bar, 656 ft)

How much does a Casio G-Shock GA-2100-1A1ER cost?

The GA-2100 comes in various color combinations, but Casio only offers the GA-2100-1A1ER in the well-known G-Shock blackout design. In February 2023, the Casio G-Shock GA-2100-1A1ER was selling for around 250 USD on Chrono24. Pre-owned models change hands for around 200 USD. Prices for both new and pre-owned copies had risen dramatically up until June 2022. For example, a new GA-2100-1A1ER, which cost just under 150 USD in December 2020, was demanding close to 370 USD by June 2022. However, prices on the secondary market have been plunging as of late. With that in mind, as of early 2023, it's a good time to buy a G-Shock – the unbreakable retro watch with modern features.