Casio G-Shock GA-2100BM-7A2ER analogue-digital transparent and blue Watch
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- 100% secure payment
- Free returns in store
- With a 3 year warranty
- Free shipping on orders over €75
- Payment in installments available
- Do you have any questions? Contact us
- Check in-store availability
Details
Details
Discover the functionality and style of the Casio men's watch, designed with an elegant transparent resin case that complements its also transparent resin strap. The analogue-digital dial, in an attractive blue colour, features棒-style numbers for easy readability. This watch boasts various useful features, including an alarm, automatic calendar, and the option for a 12-24 hour indicator. Additionally, it incorporates multiple functions such as world time, a chronograph with hundredths of a second, and a timer. The LED illumination enhances visibility in low-light environments. Powered by a battery lasting up to 3 years, this model offers a water resistance of up to 200 metres, making it an ideal companion for any adventure. The case has a diameter of 45 mm, ensuring a notable presence on the wrist. A watch that combines versatility and design.
Ref. GA-2100BM-7A2ER
Jewelry care
Jewelry care
To preserve the luster of your jewelry, it's recommended to avoid using cosmetics, cleaning products, and other chemical agents, and to clean it with a soft cloth. For professional cleaning, please visit one of our jewelry stores.
Exchanges and returns
Exchanges and returns
The return or withdrawal period is 15 days and the exchange period is 30 days, both from the date of delivery of the item.
Shipping and delivery
Shipping and delivery
Size guide
Don't know your ring size? We'll show you different ways to find the perfect size.
The size is the measurement of the ring's interior space.


How to measure your ring size at home: step-by-step guide
Method 1: Measuring an existing ring (inside diameter)
This is the most accurate method if you already have a reference ring. Follow these steps:
- You will need the ring and a ruler.
- Do not include the metal; the thickness is not considered for the measurement.
- Note the exact measurement in millimeters (mm) and look for this figure in our equivalence table, in the "Inside diameter" column.

Method 2: Measuring your finger (circumference)
If you don't have a reference ring, you can measure your finger's circumference. Follow these steps:
- You will need a string, a measuring tape, or a strip of paper and a ruler.
- We recommend measuring your finger at the end of the day to avoid swelling.
- Wrap the string, tape, or paper strip around the base of the finger on which you will wear the ring, note the exact measurement, and find it in our equivalence table.

Equivalence table
| Ring inside diameter (mm) | JOSE LUIS Joyerías Size |
|---|---|
| 15.2 mm | 8 |
| 15.5 mm | 9 |
| 15.9 mm | 10 |
| 16.2 mm | 11 |
| 16.5 mm | 12 |
| 16.8 mm | 13 |
| 17.1 mm | 14 |
| 17.4 mm | 15 |
| 17.8 mm | 16 |
| 18.0 mm | 17 |
| 18.4 mm | 18 |
| 18.7 mm | 19 |
| 19.0 mm | 20 |
| 19.3 mm | 21 |
| 19.6 mm | 22 |
| 20.0 mm | 23 |
| 20.3 mm | 24 |
You can also consult our customer service team for more information.