Casio G-Shock GA900-4A Red Black Heavy Duty Watch – NAGI
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  • Casio G-Shock GA900-4A Red Black Heavy Duty Watch GA-900
  • Casio G-Shock GA900-4A Red Black Heavy Duty Watch GA-900
  • Casio G-Shock GA900-4A Red Black Heavy Duty Watch GA-900
  • Casio G-Shock GA900-4A Red Black Heavy Duty Watch GA-900
  • Casio G-Shock GA900-4A Red Black Heavy Duty Watch GA-900
  • Casio G-Shock GA900-4A Red Black Heavy Duty Watch GA-900
  • Casio G-Shock GA900-4A Red Black Heavy Duty Watch GA-900
  • Casio G-Shock GA900-4A Red Black Heavy Duty Watch GA-900
  • Casio G-Shock GA900-4A Red Black Heavy Duty Watch GA-900
  • Casio G-Shock GA900-4A Red Black Heavy Duty Watch GA-900
  • Casio G-Shock GA900-4A Red Black Heavy Duty Watch GA-900
Casio G-Shock GA900-4A Red Black Heavy Duty Watch GA-900
Casio G-Shock GA900-4A Red Black Heavy Duty Watch GA-900
Casio G-Shock GA900-4A Red Black Heavy Duty Watch GA-900
Casio G-Shock GA900-4A Red Black Heavy Duty Watch GA-900
Casio G-Shock GA900-4A Red Black Heavy Duty Watch GA-900
Casio G-Shock GA900-4A Red Black Heavy Duty Watch GA-900
Casio G-Shock GA900-4A Red Black Heavy Duty Watch GA-900
Casio G-Shock GA900-4A Red Black Heavy Duty Watch GA-900
Casio G-Shock GA900-4A Red Black Heavy Duty Watch GA-900
Casio G-Shock GA900-4A Red Black Heavy Duty Watch GA-900
Casio G-Shock GA900-4A Red Black Heavy Duty Watch GA-900

Casio G-Shock

Casio G-Shock GA900-4A Red Black Heavy Duty Watch

Casio G-Shock GA900-4A Red Black Heavy Duty Watch

Please contact us if you are interested in this product.

Available for order.

(Orders Placed today will ship in approximately 1-2 weeks.)

G-SHOCK announces a new lineup of heavy-duty model that is great for wear in tough environments and as street fashion items as well.


The industrial design motif of this model is created by a 10-sided bezel that resembles the shape of a nut. The bezel is secured by four screws for a tough and rugged look.

Combination timekeeping is provided by analog hands along with a digital display for the ultimate in operational ease. The design of the hands and the graphic figures that appear in the digital readouts create a powerful face design that enhances readability. The band connection and all buttons have checkered surfaces that prevent slipping and contribute to operational efficiency.



  • Case / bezel material: Resin
  • Cloth Band
  • Shock Resistant
  • Mineral Glass
  • 200-meter water resistance
  • LED light (Super Illuminator)
    Selectable illumination duration (1.5 seconds or 3 seconds), afterglow
  • Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.)
  • World time
    31 time zones (48 cities + coordinated universal time), daylight saving on/off, Home city/World time city swapping, One-touch UTC Time Zone Access
  • 1/100-second stopwatch
    Measuring capacity: 23:59'59.99"
    Measuring modes: Elapsed time, split time, 1st-2nd place times
    Others: target time alarm, direct timing start from the timekeeping mode
  • Countdown timer
    Measuring unit: 1/10 second
    Countdown range: 60 minutes
    Countdown start time setting range: 1 to 60 minutes (1-minute increments)
  • 5 daily alarms (with 1 snooze alarm)
  • Hourly time signal
  • Full auto-calendar (to year 2099)
  • 12/24-hour format
  • Button operation tone on/off
  • Regular timekeeping: Hour, minute, second, pm, month, date, day
  • Accuracy: ±15 seconds per month
  • battery life: 7 years on CR2016