

🖤 The sleek powerhouse that means business—wear the legend, own the moment.
The G-Shock GA-2100 Series Watch redefines rugged sophistication with a 45.4mm carbon fiber-reinforced resin case, shock-resistant Carbon Core Guard structure, and a hybrid analog-digital display. Featuring double LED lighting and 200-meter water resistance, it’s engineered for professionals who demand durability and style in one ultra-slim package.
| ASIN | B07WJFS6LH |
| ASIN | B07WJFS6LH |
| Additional Features | Alarm |
| Age Range Description | Adult |
| Band Color | Black |
| Band Material Type | Resin |
| Band Width | 22 Millimeters |
| Bands | 1 |
| Batteries | 1 Lithium Metal batteries required. |
| Best Sellers Rank | #85,071 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #132 in Women's Wrist Watches |
| Brand Name | G-Shock |
| Case Diameter | 45.4 Millimeters |
| Case Material Type | Resin Mixed With Carbon Fiber |
| Case Thickness | 11.8 Millimeters |
| Clasp Type | Tang |
| Closure Type | Buckle |
| Crystal | Scratch Resistant Mineral |
| Customer Reviews | 4.6 4.6 out of 5 stars (2,311) |
| Date First Available | August 19, 2019 |
| Department | womens |
| Dial Color | Black |
| Display | Analog-Digital |
| Embellishment Feature | Crystal |
| Face Style | Hybrid |
| Global Trade Identification Number | 00889232241630 |
| Item Weight | 4 Ounces |
| Item model number | GA2100-1A1 |
| Manufacturer | G-Shock |
| Manufacturer | G-Shock |
| Manufacturer Part Number | GA-2100-1A1CR |
| Model Name | GA2100-1A1 |
| Model Number | GA2100-1A1 |
| Pattern | Solid |
| Power Source | Battery Powered |
| Product Dimensions | 5 x 5 x 5 inches; 4 ounces |
| Series Number | 2100 |
| Shape | Round |
| Sport Type | Walking |
| Strap Type | Two Piece Strap |
| Style Name | Military |
| Theme | Sports |
| UPC | 889232241630 |
| Unit Count | 1 Count |
| Warranty Type | Manufacturer |
| Watch Movement Type | Quartz |
| Water Resistance Depth | 200 Meters |
| Water Resistance Level | Water Resistant |
K**R
Nice look
Very high quality and best fits my wrist.
K**E
Very good 👍🏻 👍🏻👍🏻
he G-Shock GA-2100 Series Watch is one of Casio’s most successful and well-liked everyday watches. It stands out because of its slim, lightweight design compared to many other G-Shock models, yet it still delivers the rugged reliability the brand is known for.
R**G
Perfect gift watch
Package well. It arrived on time before Christmas. A perfect gift for my son. The style is simple and the Brightness great the value for the watch is within range and ease of use is great it is digital and the functionality is perfect fit.
R**.
Exactly What I Was Looking For
I have to admit, I don’t know what I expected when the box came, but what a pleasant surprise. I was looking for a watch I could take kayaking and on nature hikes, but I didn’t want to spend more than $100 on it. It needed to have a rubber or synthetic band that handled water well and was easily able to try with a towel. The watch needed to be waterproof but also not complicated. The G-Shock series is typically a very busy watch face, and the cases are usually so large (49mm and above). I wanted something that was smaller for my medium-sized wrist. I wanted a simplified G-Shock, but different, and not obnoxious. I found it with this model. Overall, it’s a nice watch. It shows very well. I like the world time setting and just love watching the hands spin around when I select the city. It fits my wrist and isn’t too big or heavy. I think it is very clean looking and I didn’t expect to say “wow” out of the box. But the design harkens back to the Audemars Piguet Royal Oak design, which is a dream look for most. This is why the watch is referred to as a “CasiOak”. I didn’t want a ton of little things to look at on the watch face so to me, looking down and checking the time is a real pleasure. There’s a day of the week and a time. Perfect. The light works well in the dark. The watch is made to be an activewear style watch so the material of the watch suits it’s ability to compete with products of the environment (water and dirt). So when I see these other comments that say things like "well the material feels cheap" or "the band is not what I thought", I don't know what other material they expected the watch to be made of. Overall, good watch and I'm not sure where the left of field reviews are coming from. I am pleased and would recommend this watch.
N**I
Great durability
Great watch!
B**4
Nice
The watch fit perfectly, quality is really good and it looks nice. Only cons I have is black on black is little hard to see and shipping box was bent, mangled and looked like it was wet at some point.
A**R
Great
The Casio G-Shock delivers exactly what the name promises: exceptional durability and reliable performance in a rugged package that stands up to daily wear, outdoor activities, and rough handling without complaint. Its shock-resistant case and resin band feel solid and resilient rather than cheap, the digital (or analog-digital) display is easy to read in a variety of light conditions, and standard features like stopwatch, countdown timer, world time, and strong battery life work consistently without fuss. If you want a watch that you can wear hard and forget about in terms of fragility, the G-Shock line offers outstanding value and dependable functionality that justify its reputation, making it a strong choice for everyday use, travel, and active lifestyles.
J**S
5 Stars for Style, Tough Read for Daily Wear
I have to keep this at 5 stars because it really is a great watch despite the readability. Once you’ve gotten bored of your Swiss watches and want to wear something different for a day or two, it’ll probably be one of your favorites to wear. On readability, it’s not the best. But if we’re being honest, that’s not really the point of this watch. This is just a great looking watch that will pair really well with very casual dress.
A**.
Everything I wanted.
E**A
Un diseño simple pero al mismo tiempo llama mucho la atención sin necesidad de ser un reloj robusto y de diseño extravagante. Funciona excelente y muy fácil de configurar, lo único que deja mucho que desear es la presentación, esperaba algo más que una simple caja de cartón muy delgado, pero eso es lo de menos, fuera de eso me encanta.
K**I
Awesome watch and very sleek. Definitely one of the most comfortable G shocks due to the thin profile, but still feels rugged and cool. A downside is the visibility in low-light environments, but that's why you get the LED light. Definitely one of my favorites.
E**.
Very small face. Ideal for a child but not a large man.
G**Y
Je suis vraiment impressionné par cette magnifique G-SHOCK GA-2100 1A1 avec son élégance noire. Mais ce qui me préoccupait le plus, c'est… Qu'elle soit une réplique, mais elle paraît à première vue authentique et, vu sa beauté, j'ai pris contact avec le vendeur qui a répondu à mes multiples messages. Donc, faites vos achats sans crainte et encore une fois… Ce garde-temps, fréquemment décrit comme exceptionnel par ses admirateurs, est incontestablement magnifique !
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