Casio G-SHOCK 48.5 × 45.5mm smart watch watch, black dial
GA-B2100-1A1ER
£129
Price at Goldsmiths, checked 28 October 2026. Prices can change: Goldsmiths' page has the final word.
This version: 48.5 × 45.5mm. Goldsmiths has 7 versions of the G-SHOCK in stock: compare them.
48.5 × 45.5mmSmart Watch200 m water resistantResinMen's
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Specifications
| Brand | Casio |
|---|---|
| Model | G-SHOCK |
| Reference | GA-B2100-1A1ER |
| Gender | Men's |
| Style | — |
| Case size | 48.5 × 45.5mm |
|---|---|
| Lug to lug | — |
| Case material | Resin |
| Bezel | — |
| Dial colour | Black |
| Strap | Resin |
Will 48.5 × 45.5mm suit your wrist? Check your size
| Movement | Smart Watch |
|---|---|
| Calibre | — |
| Power reserve | — |
| Water resistance | 200 m |
| Crystal | — |
| Thickness | — |
| Date | — |
| Guarantee | Casio 2 Years Guarantee |
A dash means neither Goldsmiths nor Casio states it on the pages we read, so it's left blank rather than guessed.
Description
Delivery & returns
Other versions of the Casio G-SHOCK
The same watch in 7 versions at Goldsmiths: here's what changes. Prices are Goldsmiths' own, checked daily.
| Reference | Size | Price |
|---|---|---|
| GA-B2100-1A1ER This one | 48.5 × 45.5mm | £129 |
| DW-6900U-1ER | 53mm | £99.90 |
| GA-2110SU-3AER | 48.5 × 45.5mm | £109 |
| GA-B2100BNR-1AER | 48.5 × 45.5mm | £129 |
| GA-2000-3AER | 51.2 × 48.7mm | £129 |
| GA-2000-1A9ER | 51.2 × 48.7mm | £129 |
| GM-2100-1AER | 49.5mm | £179 |