Casio G-Shock GMA-S120

*GMA-S120GS-3A — Updated February 2022 Color!

About GMA-S120 in Short. Brighten up your spring fashion with the G-SHOCK’S series pastel color collection. Based on the GMA-S120, these models are dressed in the vivid colors of the athleisue and casual fashion scene, perfect for a yoga session or an afternoon unwinding with a latte. Available in light blue, pink and white.


General Information

Price$95 *average Amazon Price, we may earn commission from purchases
Year of First Release2016
Battery Type CR1220 (Casio Batteries)
Manual5518 (official)

GMA-S120 Model Range *may be updated

*Want to be the first to know about new G-Shock Updates? Here we store all recent Monthly G-Shock Updates →


Famous people wearing G-Shock GMA-S120!

American singer Bebe Rexha is wearing G-Shock GMA-S120

Have you seen this watch with another person? Let us know!


Casio GMA-S120 on the wrist!


Official GMA-S120 Specs / Features *for base version GMA-S120MF-2A2

  • Case / bezel material: Resin
  • Resin Band
  • Neobrite
  • Magnetic Resistant
  • Shock Resistant
  • Mineral Glass
  • 200-meter water resistance
  • LED light
    Auto light switch, selectable illumination duration (1.5 seconds or 3 seconds), afterglow
  • World time
    29 time zones (48 cities + coordinated universal time), daylight saving on/off, Home city/World time city swapping
  • 1/1000-second stopwatch
    Measuring capacity: 99:59’59.999”
    Measuring modes: Elapsed time, lap time, split time
    Others: Speed (0 to 1998 units/hour), Distance input (0.0 to 99.9)
  • Countdown timer
    Measuring unit: 1 second
    Countdown range: 24 hours
    Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments)
    Other: Auto-repeat
  • 5 daily alarms (with 1 snooze alarm)
  • Hourly time signal
  • Full auto-calendar (to year 2099)
  • 12/24-hour format
  • Regular timekeeping
    Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (speed)
    Digital: Hour, minute, second, pm, month, date, day
  • Accuracy: ±15 seconds per month
  • Approx. battery life: 3 years on CR1220
  • Size of case : 49×45.9×15.8mm
  • Total weight : 55g

Recent News about GMA-S120 

All Casio GMA-S120 News →


You ask, we answer…

What does 200-meter water resistance in GMA-S120 mean?

The watch is good for swimming but not for deep diving.

What type of battery does GMA-S120 have?

3 years CR1220.

Does GMA-S120 have alarm?

Yes, it has 5 daily alarms (with 1 snooze alarm).


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