Mathieu G. 23/11/2025
| Reference Ocarat | #123863 |
| Reference | GST-B1000D-3AER |
| Brand | Casio G-Shock |
| Product Type | Watch |
| Gender | Men |
| Color | Gray Green |
| Material | Carbon Steel |
| Material Quality | Resin Stainless Steel |
| Finish | Matte (Brushed / Satin) Polished / Shiny |
| Warranty | 2 Years |
| Thickness (in mm) | 11,60 |
| Diameter (in mm) | 44,20 |
| Warranty Type | International |
| Labels and Certificates | Authorized Retailer |
| Case Shape | Octagonal |
| Case Weight (in g) | 118,00 |
| Dial Finish | Guilloché Textured |
| Watch Case Back | Case back secured by screws |
| Crystal Shape | Flat |
| Glass Quality | Mineral Crystal |
| Watch Case Types | Date |
| Buttons | 1 Crown 3 Pushers |
| Screw Crown | Yes |
| Water Resistance (in ATM) | 20 |
| Movements | Solar |
| Movement Type | Japanese Movement |
| Calendar and Time | Dates Days Hours Minutes Perpetual calendar Seconds |
| Chronograph Function | Yes |
| Counters and Durations | 24h 30 min |
| Timekeeping and Measurement | Chronometer to 1/1th of a Second Countdown Flyback Chronograph |
| Alarm-Wake Up | Yes |
| Power Reserve (Maximum Duration) | 5 months in the dark |
| Display Type | Analog (hands) |
| Display Specifications | LED Luminescent hands and indexes Neobrite Super Illuminator |
| Number of Counters (Additional) | 2 |
| Techniques and Mechanics | Multifunctions: see description |
| Bracelet Material | Stainless Steel |
| Strap Color | Gray |
| Bracelet Material Finish | Brushed steel Polished steel |
| Watch Clasp | Triple folding clasp |
| Lug Width (in mm) | Special - Custom Made |
| Connectivity and Display | Bluetooth Low Battery Warning |
The Casio G-Shock GST-B1000 watch stands as a flagship piece in the G-Steel collection. This model is defined by its cleverly designed octagonal case, with an imposing diameter of 44.20 mm and a thickness of 11.60 mm. Built for unmatched toughness, it combines stainless steel and carbon fiber-reinforced resin construction. The exterior finish strikes a perfect balance between brushed and polished surfaces, delivering a look that's as elegant as it is contemporary. At 118 g, it makes a bold statement on the wrist, while the screw-back case reinforces its 20 ATM water resistance - ideal for the most demanding aquatic environments.
The dial of the G-Steel GST-B1000 watch is a technical and aesthetic masterpiece. Featuring a guilloché and textured finish, the intense green dial draws the eye and amplifies the brilliance of the luminescent indexes. Its intricate design perfectly balances function and modern style, thanks to its Neobrite-coated hands and LED Super Illuminator technology for optimal legibility in all conditions. Flat mineral glass protects the dial effectively while showcasing the depth and richness of its colors. The multiple visible functions - including the perpetual calendar, display of date, hours, minutes, and seconds, plus additional 30-minute, day and 24-hour counters - complete the package, making this dial a highly sophisticated interface.
▪ Bluetooth® Smart
▪ Smartphone time
▪ Stopwatch function - 1/1 sec - 30 min
▪ Timer - 30 min.
▪ Daily alarm
▪ Find my phone function
▪ Flight log function
▪ Auto calendar
At its heart beats a Japanese solar movement representing the pinnacle of watchmaking technology. This movement stands out for its ability to recharge via natural or artificial light, delivering an incredible power reserve of up to 5 months under normal use without light exposure after charging, and 18 months in complete darkness with the energy-saving function active - a testament to its exceptional reliability and environmental credentials. Features include a flyback chronograph capable of measuring time to 1/1-second precision, and a motor system that seamlessly manages the perpetual calendar, continuously displaying the exact day and date. The watch also incorporates a daily alarm and a countdown timer function, proving once again that technology and elegance are a perfect match.
The strap of this G-Steel watch is equally impressive in design, crafted in stainless steel for unmatched durability and optimal comfort. Its brushed and polished finish harmonizes seamlessly with the rest of the watch, creating perfect visual continuity. The practical and secure triple-fold deployant clasp delivers confidence and ease of use in any situation.
The watch offers water resistance up to 20 ATM, or 200 meters, making it perfectly suited for the most demanding environments - diving, swimming, or any activity involving powerful water exposure. The combination of resistant materials and expert construction ensures consistent performance without sacrificing its chic, sophisticated look.


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Customer reviews
Mathieu G. 23/11/2025
G-Steel Watch GST-B1000D-3AER
(Ref. 123863)