Since its launch in 1983, the G-SHOCK toughness watch has continued to evolve in pursuit of tireless strength.
This special model, celebrating the start of 2025, is designed with the motif of the "eternal serpent."
The gold IP side buttons, the bridge located at the 3 o'clock and 9 o'clock positions in the center of the dial, and the metal band ring are all laser-etched with a snakeskin pattern to create a special finish.
The back of the watch is engraved with an illustration of Ouroboros (a legendary snake-shaped creature from ancient mythology), which is said to be a symbol of immortality, making it a festive design to celebrate the Year of the Snake.
The base model is the G-STEEL GST-B400, which features a slim module and carbon core guard structure for a slimmer, more stylish design.
This special model celebrates the Year of the Snake and is a G-STEEL model that combines toughness and design by fusing different materials, metal and resin.

- Shock-resistant structure
・ Tough Solar (solar charging system)
- 20 ATM water resistance
- Mobile Link function (function linkage via Bluetooth® communication with compatible mobile phones)
- Needle retraction function (When the needle overlaps with the LCD display and is difficult to see, the needle can be temporarily retracted from above the LCD display)
World time: 38 cities (38 time zones, daylight saving time automatic setting function) + UTC (Coordinated Universal Time), home city swap function
Stopwatch (1/100 seconds (less than 1 hour)/1 second (more than 1 hour), 24 hour counter, with lap/split
- Timer (set unit: 1 second, maximum set: 60 minutes, measured in 1 second units)
・ 5 time alarms
・ Time signal
・ Battery indicator display
- Power saving function (display turns off after a certain period of time in a dark place to save power)
- Fully automatic calendar
- 12/24 hour display switching
- Operation sound ON/OFF switching function
- Date display (month/day display switching)
- Day of the week display (switchable between 6 languages: English, Spanish, French, German, Italian, and Russian)
Double LED light: LED light for dial (Super Illuminator, afterglow function, afterglow time switch (1.5 seconds/3 seconds)), LED backlight for LCD (Super Illuminator, afterglow function, afterglow time switch (1.5 seconds/3 seconds))
・ Operating time from full charge without solar power generation When using functions: Approximately 7 months When in power saving mode: Approximately 18 months * When not linked to a smartphone, it operates with normal quartz accuracy (average monthly difference of ±15 seconds)

Model Number: GST-B400CX-1AJR


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Casio  Silver  Adult Casio G-Shock G-STEEL gsts130bd-1a