David M. 24/11/2025
| Reference Ocarat | #123861 |
| Reference | GST-B1000D-1AER |
| Brand | Casio G-Shock |
| Product Type | Watch |
| Gender | Men |
| Color | Black Gray |
| 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 |
Discover the G-Shock G-Steel GST-B1000D-1AER watch - a timepiece that fuses elegance and toughness through its distinctive octagonal design. Built for those who demand both style and substance, it features a case crafted from stainless steel and carbon fiber-reinforced resin. This material combination delivers outstanding durability and wrist comfort, all wrapped in a refined grey tone that enhances its modern aesthetic. At 44.2 mm in diameter and just 11.6 mm thick, this watch commands attention while remaining highly wearable thanks to its well-balanced weight of 118 g. The screw-down caseback seals in exceptional water resistance while allowing easy access for the rare servicing need - a perfect harmony of cutting-edge technology and sophisticated design.
The dial of the G-Shock G-Steel is where modern elegance meets advanced functionality. Its refined black finish showcases an intricate guilloché texture that adds striking visual depth. The dial packs in a perpetual calendar, analog display with hands and indices featuring Neobrite technology for reliable luminescence in the dark. The Super Illuminator LED keeps the display legible even in the harshest conditions. Additional sub-dials offer 24-hour and 30-minute measurement, plus a 1/1-second stopwatch - making this dial not just functional, but a masterpiece of precision that displays hours, minutes, seconds, and the date.
▪ 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
This watch features a sophisticated solar movement - a testament to Japanese expertise that seamlessly blends innovation and performance. The mechanism delivers exceptional battery life: up to 5 months of operation in complete darkness after a full charge, and up to 18 months with Power Saving mode enabled. Combine that with the precision of a flyback chronograph, and this timepiece stands as a benchmark for anyone who demands more than just timekeeping.
The bracelet on this G-Shock captures the essence of ruggedness and comfort. Crafted in stainless steel with a meticulous brushed and polished finish, it reflects light beautifully while effortlessly standing the test of time. Its grey tone harmonizes perfectly with the rest of the watch, completing a look that's equal parts sporty and refined. Designed with painstaking attention to fit and security, it features a triple-fold deployant clasp for easy wearing and a locked, secure fit.
Water resistance on the G-Shock G-Steel is engineered to the highest standard. Rated at 20 ATM, it handles virtually any aquatic activity - from swimming to freediving. Its ability to withstand high pressure without compromising internal components is the result of precision engineering, reinforced by a screw-down caseback and a screw-down crown.


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Customer reviews
David M. 24/11/2025
G-Steel GST-B1000D-1AER Watch
(Ref. 123861)