Bestseller-28%
Second handYes
Case Thickness17.00 mm
Strap ColorBlack
Case shapeRound
AlarmDaily alarm

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Case width 51 mm
Strap width 28 mm
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GA-100-1A4ER (GA-100-1A4) Casio G-SHOCK Watch

Customers' rating: 4.9
€109.00 €79.00 now cheaper by €30.00 Lowest price since 30 days before discounting: €109.00
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More Information G-SHOCK GA-100-1A4ER (GA-100-1A4)

Model GA-100-1A4ER (GA-100-1A4)
Manufacturer G-SHOCK
Warranty 3 years , extend for a further 3 years
Crystal Mineral
Case Width 51.00 mm
Case Thickness 17.00 mm
Water Resistancy 200 metres
Movement Quartz, Japanese, caliber Casio 5081
Case material Synthetic
Case colour Black
Case shape Round
Dial color Black
Illumination LED
Strap Material Plastic
Strap Color Black
Strap Width 28 mm
Strap Style Casual, Sports
Max. wrist size 21,5 cm
Gender Gents
EAN Code 4971850443933
Product type watch

Details G-SHOCK GA-100-1A4ER (GA-100-1A4)

Functions

Auto-LED light

A light-emitting diode (LED) is used to illuminate the watch face, incl. the feature of an Auto Light Switch that illuminates the display when the watch is angled towards the face.

Shock-resistant

Shock-resistant construction protects against impact and vibration.

Magnetic resistant

The housing is designed to shield the clock from magnetic fields.

World time function

Displays the current time in major cities and specific areas around the world.

Stopwatch function - 1/1000 sec. - 100 hours

Measures with an accuracy of thousandth part seconds the meantime and the end time. Signals confirm the starting/stop selection. The measuring capacity reaches up to 100 hours.

Timer - 1/1 min. - 24 hours (with automatic repeat)

For fans of precision: the countdown timers help you to remember specific or recurring events by giving off an audible signal at a preset time. They then count back automatically from the preset time. The time can be set to the nearest minute and up to 24 hours in advance. Ideal for people who need to take medicines every day or those who do interval training.

What’s in the box?

  • 3 Year Warranty
  • User Manual
  • Original box

Reviews about G-SHOCK Casio GA-100-1A4ER (GA-100-1A4) (103)

Customers' rating: 4.9
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Your Rating:
  1. 4/17/26
    100%
    The Casio G-SHOCK GA-100-1A4ER is an indestructible watch that accompanies me in all conditions, from the gym to hiking trips in the mountains. The biggest advantage of this model is its legendary shock-resistant system—I don’t have to worry that an accidental bump against a doorframe or a fall while running will affect its performance.
    Woland
    This review is helpful for you.
  2. 4/15/26
    100%
    I bought this model for myself and I really like it. The calendar and LED backlight are great features. I'm really happy with my choice.
    neonpogo
    This review is helpful for you.
  3. 12/8/25
    100%
    The only downside is that the buttons don't make a sound:(.
    Paweł
    This review is helpful for you.