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The Casio GA-B2100-1A1ER is a sleek, unisex digital quartz watch combining rugged G-Shock durability with smart features like solar power, Bluetooth connectivity, and world time. Its stealthy black design fits any style, while 200m water resistance and shock resistance ensure it’s ready for every challenge. Perfect for professionals who demand reliability and tech-savvy convenience in one timeless accessory.
| ASIN | B0B8DKKYCM |
| ASIN | B0B8DKKYCM |
| Age Range Description | Adult |
| Band Colour | Black |
| Band Length | 21 Centimetres |
| Band Material Type | Plastic |
| Band Width | 24 Millimetres |
| Bands | 1 |
| Batteries | 1 Lithium Metal batteries required. (included) |
| Best Sellers Rank | 15,687 in Fashion ( See Top 100 in Fashion ) 73 in Men's Wrist Watches |
| Brand Name | Casio |
| Case Diameter | 46 Millimetres |
| Case Material Type | Plastic |
| Case Thickness | 11 Millimetres |
| Character | No aplica |
| Clasp Type | Buckle |
| Closure Type | Buckle |
| Country Of Origin | China |
| Country of origin | China |
| Crystal | Mineral Glass |
| Customer Reviews | 4.2 4.2 out of 5 stars (297) |
| Customer reviews | 4.2 4.2 out of 5 stars (297) |
| Date First Available | 2 Aug. 2022 |
| Department | Men's |
| Dial Color | Black |
| Display | Analog |
| Embellishment Feature | Crystal |
| Face Style | strip |
| Included Components | Gift Box, Warranty Information |
| Item Shape | Round |
| Item Type Name | Watch |
| Item Weight | 80 Grams |
| Item model number | GA-B2100-1A1ER |
| Manufacturer | Casio |
| Manufacturer | Casio |
| Manufacturer Part Number | GA-B2100-1A1ER |
| Model Name | G-Shock |
| Model Number | GA-B2100-1A1ER |
| Pattern | Solid |
| Power Source | Battery Powered |
| Product Dimensions | 13 x 3 x 8 cm; 80 g |
| Series Number | 2100 |
| Special Features | Alarm, Bluetooth, Solar Powered, Stop Watch, World Time |
| Sport Type | Other Sports |
| Strap Type | Plastic strap |
| Style Name | sport |
| Theme | General |
| Warranty Type | Limited |
| Watch Movement Type | Quartz |
| Water Resistance Level | Not Water Resistant |
N**L
Great, understated G-Shock
This watch has the rugged solidity of a G-Shock, but its dark octagonal face doesn't attract attention like some of the more flamboyant models. If you want your watch to catch people's eyes, this one isn't for you. However, I love its stealthy styling and useful Bluetooth integration (I find it quicker to set alarms via the app than fiddle with the buttons on the watch - although you do need to use a button manoeuvre to make the initial BT connection). The backlight is bright enough to easily see the digital display, at least, in the dark, although sometimes the analogue hands do get a bit lost.
A**R
Perfect holiday watch
200m Waterproof, updates time from phone so time is always right when travelling and solar so never needs to be opened to change battery. When you don’t want to risk damaging your smartwatch on holiday this is a great choice
M**D
Amazing watch
Wearing it right as I write this, super comfortable even for wider wrists lime mine. Looks great - even for a digital-analogue watch. Is slightly difficult to pair initially but after that it is very simple to use and incredibly accurate. The value for money is also incredible; especially when given the potential for modifying.
L**S
Nice looking watch
I recently got my first G-SHOCK watch and it’s definitely a unique experience. I primarily wear watches with metal straps, so having a rubber strap is a big change for me. It doesn’t have that luxurious comfort and weight, but it does have its own charm. It’s design is very distinctive. It looks rugged and strong, which also gives it charm. The whole watch seems ready to take on any adventure that comes its way. This aligns perfectly with its reputation of being tough. When it comes to functionality, the G-SHOCK shines through. It has so many features including shock resistance and water resistance that make it a tool watch. Not only can you use it to tell time but you can also do things like set alarms or use a stopwatch. Someone could be holding off on buying an Apple Watch if they had this one for long enough. I do admit though, some of these functions can be a bit confusing for first time users — even more so when you’re used to wearing a different type of watch every day. In summary, the G-SHOCK has won me over because of its unique design and impressive functionality, especially the solar and Bluetooth abilities!
A**R
Not solar and Bluetooth
The picture and description says it’s Bluetooth and solar but it’s not the reference in the description is the standard watch don’t order if you want the solar one
M**N
Very good
I like it - I've not worn a watch for years, Only trouble with it was I was catching a calf to tag it and it went to break and because I was wearing the watch, it hyper extended my wrist back the way, was sore for a few weeks. Farmers beware. Otherwise great.
L**L
really good quality- no maintenance
Really good quality product. Doesn' t require any maintenance (no batteries needed as it is recharging itself), which is sth I was looking for. Good value for money.
C**I
Perfect weekend watch
Very good quality and robust watch. I like the features. Only critisim I have is that, all black model is hard to see in low lights
K**A
Excelente reloj
B**N
Görseldekinden farklı rengi gelmiş olmasına rağmen iade etmedim. Bana gelende kadranının içindeki tüm parçalar siyah değil.
F**R
J'ai acheté xette montre pour mo fils de 13 ans. Je craignais qu'elle soit trop grznde, mais pas du tout. Impecable. De plus, pour le prix, elle est étonnante. Heure mondiale, blue tooth, chrono, étanche... et c'est une Casio! ⁸7
A**N
Este reloj es perfecto, llevo un año con el y le he dado muchísima caña. No he tenido que cargarlo porque se carga con la luz solar, lo he tirado al suelo, le he dado patadas, lo he llevado a la playa, a trabajar, a cualquier lado... y la pantalla ni un rasguño. 10/10
M**S
C'è poco da dire, un orologio perfetto, non troppo grande, leggero, indistruttibile ed eterno, senza mai dover toccare orario e batteria per il resto della vita. È poi l'unico Casio che a mio avviso può ricoprire tutti gli stili, è davvero stiloso ma non vistoso, curato ma non pacchiano, davvero perfetto.