# Watch Casio GW-7900B-1ER

**URL:** https://aio.lv/en/product--casio-gw-7900b-1er--1416421
**Data updated:** 2025-12-01 12:23 (EET)
**Category:** Smartwatches & Fitness Bands
**Manufacturer:** CASIO
**Manufacturer code:** GW-7900B-1ER
**EAN:** 4971850435211
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 162.49 €
**Prices and availability valid until:** 2026-07-24 23:59
**Price without VAT (21%):** 134.29 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--casio-gw-7900b-1er--1416421

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 23.07.2026 | free |
| Pickup points | 28.07.2026 | 1.89 EUR |
| Courier delivery to door | 28.07.2026 | 4.99 EUR |

## Summary description

The Casio GW-7900B-1ER is a durable watch made with a resin case and band, featuring a mineral glass. It operates on a CTL1616 battery and weighs 71 g. With dimensions of 50 x 17.7 x 52.4 mm, it is designed for comfort and functionality, making it ideal for outdoor activities.

## Long description

Full-Auto Illuminator model with solar power and radio-controlled timekeeping. The watch automatically turns the electroluminescent backlight off when ambient light is sufficient and enables it in low-light conditions. It uses a solar cell for operation and receives DCF/MSF/WWVB/JJY/BPC radio signals to maintain accurate local time, including automatic changes for daylight saving in many regions. The display also provides moon phase and tide graph information based on the selected latitude and longitude. Durable construction includes shock resistance, mineral glass and a resin case and band. Additional features include stopwatch and countdown timer, five daily alarms with snooze, button tone on/off, automatic calendar, 12/24-hour display, battery level indicator and water resistance to 20 bar (200 metres).
Advantages
The combination of solar power and radio signal reception ensures continuous, low-maintenance operation with highly accurate timekeeping. Shock-resistant design, mineral glass and a flexible resin band provide durable everyday wear. Moon data and tide graph displays offer relevant information for outdoor and marine activities. Multiple alarms, a snooze function and a long countdown timer support daily scheduling and training needs. Clear battery level indication and selectable button tones add practical convenience.
Key specifications
Backlight: Full-Auto EL (auto deactivates in sufficient light)
Shock resistance: shock-resistant construction
Power source: solar cell
Radio signal reception: DCF / MSF / WWVB / JJY / BPC
Moon data: phase display based on latitude/longitude
Tide graph: graphical tide display using latitude/longitude and lunitidal interval
World time: major cities and specific areas
Stopwatch: 1/100 sec. accuracy, up to 24 hours
Timer: countdown 1-minute increments, up to 24 hours
Alarms: 5 daily alarms + hourly time signal
Snooze: yes
Button tones: on/off
Calendar: automatic
Time format: 12/24-hour
Glass: mineral glass
Case material: resin
Band material: resin
Battery level indicator: yes
Water resistance: 20 bar / 200 metres
How to use
Set the watch to the local time zone and allow it to receive the appropriate radio signal for automatic time adjustment. Charge the watch through exposure to light; the solar cell stores energy for operation. Use the mode button to switch between time, world time, stopwatch, timer and alarm functions. Configure alarms and countdown timers using the function buttons; enable or disable button tones as needed. For moon and tide displays, enter the correct latitude and longitude and, if required, adjust the lunitidal interval to match local tide behaviour.
Recommendations
To maintain optimal performance, expose the watch regularly to light for solar charging, avoid strong impacts despite its shock resistance, and rinse with fresh water after exposure to salt water. Periodically check the battery level indicator and verify radio reception when traveling between regions to ensure correct time settings.

## Specifications

| Feature | Value |
|---|---|
| Snooze function | Yes |
| Shockproof | Yes |
| Alarm function | Yes |
| Radio signal receiver | DCF/MSF/WWVB/JJY/BPC |
| Water resistant depth | 200 m |

### Display

| Feature | Value |
|---|---|
| Watch glass type | Mineral |

### Design

| Feature | Value |
|---|---|
| Watch case material | Resin |
| Band material | Resin |

### Power

| Feature | Value |
|---|---|
| Battery type | CTL1616 |
| Solar power | Yes |

### Weight & dimensions

| Feature | Value |
|---|---|
| Dimensions (WxDxH) | 50 x 17.7 x 52.4 |
| Weight | 0.071 kg |

### Performance

| Feature | Value |
|---|---|
| Timer | 1/1min - 24h |

### Battery

| Feature | Value |
|---|---|
| Battery level indicator | Yes |

### Features

| Feature | Value |
|---|---|
| Calendar | Yes |
| Stopwatch | Yes |
| Clock mode | 12h/24h |
| World time function | Yes |

## FAQ

### How much does the Watch Casio GW-7900B-1ER cost, and is it available for purchase?

The price is 162.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 43 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 23.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All CASIO products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized CASIO service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: weight, watch case material, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/1416421/64149226_large.webp