Casio
Casio G-Shock GBM-2100A-1A2ER

Product Information
Overview
This Casio model is a robust and technologically advanced watch, designed for an active lifestyle. With Bluetooth connectivity, Tough Solar and a wide range of features, it offers both durability and smart technology. The bio-based resin and stainless steel case gives a modern and eco-friendly touch, while the 20 ATM water resistance makes the watch ready for both sports and adventures.
Comfort
Weighing just 72 grams and featuring a flexible resin strap, the watch is comfortable to wear even during extended periods of use. The Bluetooth function enables automatic time adjustment and easy management via the CASIO WATCHES app. The combination of Tough Solar and power saving mode ensures long operating times without battery replacement.
Summary
This Casio watch combines advanced functionality with robust construction and eco-friendly materials. With features like world time, chronograph, five daily alarms, Bluetooth connectivity and Tough Solar, it's both smart and reliable. A versatile watch that's as practical in everyday life as it is during tough outdoor activities.
Measurements & Material
- Strap material
- Resin
- Diameter
- 44 mm
- Width of bracelet
- 25 mm
- Thickness
- 12 mm
- Glass
- Mineral
- Clockwork
- Quartz
Design & Style
- Case color
- Silver
- Color of strap
- Black
- Dial color
- Turquoise
- Target group
- Men’s
- Water protection (ATM)
- 20
- Trademark
- Casio
Technical details
- Features
- 24-hour display
- Date
- Stopwatch
- Chronograph
- Countdown timer
- World timer
- Bluetooth
Delivery
For some products, the delivery time is 1–2 business days. Orders placed before 3:30 PM on weekdays are usually shipped the same day and delivered the next business day, depending on your location in the country. For other products, the estimated delivery time is 3–6 business days.
Returns
We want you to feel completely confident when shopping with us. That's why we offer a 30-day right of return from the day you receive your order. If you change your mind about your purchase or if the watch doesn't meet your expectations, you can easily return it for an exchange or refund. For returns, you will conveniently receive a QR code to use for the return process. Read more about the terms and conditions here.
All watches at Kronura come with a minimum 2-year warranty.
What if the watch stops working?
When you shop at Kronura, you can feel secure – we handle the entire warranty process from start to finish. Should anything unexpected happen to your watch during the warranty period, you only need to contact us, and we will take care of the rest.
1. Contact us via email at (Support@kronura.se). Describe the fault as clearly as possible and attach images if possible.
2. Wait for a response from our customer service team, who will get back to you within 1–2 business days with further instructions.
3. We manage the process – Kronura arranges for the watch to be sent to the brand's authorized service center.
4. Resolution and feedback – you will be notified by us when the matter is resolved and the watch has been repaired, replaced, or rectified according to the warranty terms.
Do you need help? We're here for you.
Please contact us if you have questions about:
- Your order
- Products and availability
- Delivery or returns
- Warranty and complaints
- Care and maintenance of your watch
Frequently asked questions
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When your order ships, you will receive a tracking number via email. Delivery is made with Postnord and can be tracked directly on their website.
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We have a watch guide on our website that helps you choose the right size based on your wrist size and personal style.
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Yes, we offer installment payments via Klarna, allowing you to pay at your own pace and feel secure throughout the entire purchase.

