Casio GST-B400BB-1AER Men's Watch G-Shock G-Steel • Tough Solar • Bluetooth Mobile Link
Casio GST-B400BB-1AER Men's Watch G-Shock G-Steel • Tough Solar • Bluetooth Mobile Link
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Model Number: GST-B400BB-1AER
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Product Details
Description
The Casio GST-B400BB-1AER is a men's watch from the G-Shock G-Steel collection, combining rugged sportiness with elegant design. The striking all-black concept, achieved through an ion-plated metal bezel on a deep black resin base, makes this watch a cool style statement for any occasion. The proven Carbon Core Guard structure ensures maximum shock resistance, while water resistance to 20 bar meets the highest demands for everyday durability.
The combination dial displays hours and minutes analogue, alongside digital seconds, date and day of the week. Thanks to Tough Solar, the watch is charged by light energy and automatically set to the exact time via Bluetooth connection to the CASIO WATCHES app, ensuring precise timekeeping at all times. World time, stopwatch, countdown timer and five daily alarms complete the extensive feature set. The case measures 46.6 × 49.6 × 12.9 mm and weighs 80 g.
Key Features of the Casio GST-B400BB-1AER Watch
- Tough Solar with Bluetooth: Automatic time synchronisation via smartphone connection and solar power supply for reliable continuous operation.
- Carbon Core Guard Structure: Shock-resistant case made of resin and stainless steel with black ion plating for maximum durability.
- Extensive Functions: World time with 38 time zones, 1/100-sec. stopwatch, countdown timer, 5 daily alarms and fully automatic calendar until 2099.
Technical Data
Basic data
| Target group |
Men |
|---|---|
| Style / Occasion |
Sport, Casual |
| Manufacturer | Casio |
| Model series / Collection |
G-Shock G-Steel |
| Model number |
GST-B400BB-1AER |
| EAN / GTIN | 4549526350566 |
| Display type |
Analog-digital |
| Water resistance in bar |
20 |
| Colour |
Black |
| Other features |
Bluetooth Mobile Link, world time (38 time zones), 5 daily alarms, automatic calendar until 2099, 12/24-hour format, power saving function, battery level indicator |
Case & Construction
| Case material |
Resin |
|---|---|
| Case colour |
Black |
| Case diameter in mm |
49,6 |
| Case shape |
Round |
| Case height in mm |
12,9 |
| Weight in grams |
80 |
| Watch glass |
Mineral glass |
Dial & Display
| Dial colour |
Black |
|---|---|
| Second hand |
Yes |
| Luminous material (Lume) |
Yes (hands & indices) |
Movement & Drive
| Drive type / Movement |
Solar |
|---|---|
| Date display |
Yes |
| Stopwatch function |
Yes |
| Day display |
Yes |
| Timer |
Yes |
Strap & Clasp
| Strap material |
Resin |
|---|---|
| Strap colour |
Black |
| Strap width in mm |
145 bis 215 mm |
Care instructions
Care Instructions for Wristwatches
Care & Cleaning
- Daily: Wipe case and bracelet with a soft, dry cloth to remove dirt and perspiration.
- Water-resistant watches: Clean with mild soapy water and a soft brush, rinse, dry thoroughly.
Important: Screw the crown down firmly beforehand!!! - Not water-resistant: Clean only dry or slightly damp, do not use water or cleaning agents.
- Avoid: Harsh chemicals, perfume, cosmetics and heat.
- Leather straps: Do not soak, clean only slightly damp and allow to dry away from heat.
- Water resistance: Do not wear in the shower or bath, have it tested annually.
- Battery (quartz): Have a depleted battery replaced immediately.
- Mechanical watches: Service by a master watchmaker every 5 years.
Storage & Handling
- Store the watch separately, not in direct contact with other jewellery (risk of scratching).
- Place mechanical watches on a flat surface when winding, do not leave the crown pulled out.
Scope of delivery
Product questions
Find your perfect fit
Casio – Functional Watches for Modern Everyday Life
Casio became known in the 1970s for wristwatches that redefined technology and everyday usability. Digital displays, innovative functions, and robust construction made the brand popular worldwide.
To this day, Casio wristwatches stand for reliability and practical use. They are aimed at people who value functionality, durability, and a clear price-performance ratio.
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Whether for yourself or as a gift: We guarantee you 100% original products from renowned manufacturers. Your order will leave our premises insured and will reach you the very next business day.
Should the item not fit perfectly, take advantage of our generous 100-Day Returns – uncomplicated and free of charge. Experience for yourself why over 13,000 customers have found their timepieces with us.
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