CASIO G-SHOCK GA-2100-9A9JF

1-month money-back guarantee

1-2 days later

July 25, 2026

This is the One Tone series, finishing every detail in a single tone. The base model uses the GA-2100 Octagon bezel. The popular coloring is unified in a single tone—from the case, bezel, band, to dial parts—and the face is finished with a deeper dimension. This color model is a casual and easy-to-use styling accent, perfect for street fashion. (From the official website)

VoltYellow

Carbon fiber reinforced resin / resin (biomass plastic)

Resin (Biomass Plastic)

Case size (height × width × thickness): 48.5×45.4×11.8 mm / Weight: approx. 51g

Approximately 14.5-21.5 cm

Quartz / Battery life: approx. 3 years / Accuracy: Average monthly deviation ±15 seconds

20 ATM water resistance

inorganic glass

Shock-resistant structure (shock resist) / Carbon core guard structure / World time: 48 cities worldwide (31 time zones, with daylight saving time setting function) + UTC (Coordinated Universal Time) time display / Stopwatch (1/100 second (less than 1 hour) / 1 second (over 1 hour), 24-hour counter, with split) / Timer (set unit: 1 second, maximum set: 24 hours, measured in 1-second increments) / 5 time alarms and time signals / Double LED lights: LED light for dial (with super illuminator, afterglow function, and 1.5-second/3-second afterglow time switching), LED backlight for LCD (with super illuminator, afterglow function, and 1.5-second/3-second afterglow time switching) / LED: White / Full auto calendar / ON/OFF sound switching function / 12/24-hour display switching Needle retraction function (If the hand overlaps with the LCD display and is hard to see, you can temporarily move the needle away from above the display)

Withbox

There are scratches or dirt on the bezel, case, or strap.

Depending on your monitor settings and room lighting, the actual product color may differ.