G-Shock GA-B2100
The G-Shock GA-B2100 by Casio is a rugged tool for the wrist. The 45.4 mm carbon/resin case houses the Casio Module 5691 calibre (solar). Mineral glass and 200 m water resistance place the watch firmly in the practical camp; it is worn on the resin strap in everyday life and outdoors. Tool first, jewellery second.
All technical data comes from manufacturer information and is checked against manufacturer or retailer pages before inclusion. The editorial rating is our assessment of technology, build quality and value for money in the class, not a lab test. The guide price is based on the recommended retail price; you can always see the current price in the shop. More about how we work →
The G-Shock GA-B2100 data in detail
Movement, case and features decide how a watch performs in everyday life. Here are the key data of the G-Shock GA-B2100 at a glance, as in the manufacturer's data sheet.
Suits you if...
Our assessment based on technology, build quality, versatility and value for money in the respective class. We will show genuine user reviews as soon as they are available.
There are no user reviews for this model yet. You can find our editorial assessment on the left.
Frequently asked questions about the G-Shock GA-B2100
Here you will find short, clear answers about the G-Shock GA-B2100 by Casio. The details help you judge size, movement, water resistance and price. This way you can decide more quickly whether the watch suits you.
How big is the G-Shock GA-B2100?
The G-Shock GA-B2100 measures 45.4 mm in diameter and 11.9 mm in height. That gives the watch a strong presence on the wrist; what matters is that the lugs do not extend beyond your wrist.
Which movement powers the G-Shock GA-B2100?
The G-Shock GA-B2100 is powered by the Casio Module 5691 calibre with solar. It charges its reserve from light and runs for years without a battery change.
Is the G-Shock GA-B2100 water resistant?
The G-Shock GA-B2100 is pressure-tested to 200 m and is therefore suitable for swimming, snorkelling and most dives. The metre rating is a test pressure, not a diving depth.
How much does the G-Shock GA-B2100 cost?
The G-Shock GA-B2100 (Ref. GA-B2100-1AER · 45.4 mm) has a guide price of approx. €150.00, based on the recommended retail price. You can find the current price directly at our partner shop Amazon.de.
What occasion is the G-Shock GA-B2100 suited to?
The G-Shock GA-B2100 suits everyday life, the outdoors and sport above all. This follows from its rugged look, its size and its mineral glass and resin strap.
Which watches are similar to the G-Shock GA-B2100?
G-Shock GA-2100 by Casio, F-91W by Casio and Collection AE-1200WHD by Casio go in a similar direction. They share the watch type or a related concept and are worth comparing before you buy.
Related guides
More guidance on the G-Shock GA-B2100: these guides go deeper into watch type, technology and the buying decision, and help you compare it with other models.