Casio G-Shock GA-1000 Watches

This new model is the first in the GRAVITYMASTER lineup to be equipped with digital compass capabilities, creating a watch that is perfectly matched to the needs of the modern aviator, both in terms of function and appearance. Pressing the 9 o’clock button in any mode immediately goes to the Digital Compass Mode, and a button at 8 o’clock returns to the mode you were in before the Digital Compass Mode. Continual direction readings can be taken for 20 seconds, during which the second hand points to north, a literal direction indicator is displayed in the upper display, and a direction angle value is displayed in the lower display.

Important Information

  • Price — 170$ *average Amazon Price, we may earn commission from purchases
  • Year of first Release —  2013
  • Module Number — 5302 / Manual
  • Model Range — GRAVITYMASTER (Developed in response to pilots’ needs, these tough watches offer improved accuracy, strength and practicality. Famous for unique and beautiful aviation design (usually analog) and advanced technologies.)
  • Other Divisions the GA-1000 belongs to: *you may find all watches of the division by clicking on the link
  • Battery Type — SR927W × 2 (G-Shock Batteries)

GA-1000 Model Range *may be updated

The most distinctive specs of GA-1000 *Editorial
— 200-meter water resistance
(good for swimming but not for deep diving)
— Digital compass (measures and displays direction as one of 16 points)
— Thermometer (can measure and display the outside temperature in a range from -10 C to 60 C)
— Neon Illuminator (Illuminating the display causes the face, and hour and minute hands to glow with neon color, which looks great late on a dark outdoor night)

Official GA-1000 Video

Official Marketing Focus from Casio

Bearing Memory lets you temporarily store and display a direction reading so you can use it as a reference as you take subsequent digital compass readings. Other features include temperature measurement, large numerals, and thick hands for easy reading. A coating on the tip of the second hand and minute markers reacts with the black light illumination of the watch for easy reading in the dark.

Official GA-1000 Specs / Features *for base version GA-1000

  • Case / bezel material: Resin / Stainless steel
  • Resin Band
  • Neobrite
  • Shock Resistant
  • Mineral Glass / Spherical Glass
  • 200-meter water resistance
  • Neon Illuminator (Black light LED)
    Auto light switch, selectable illumination duration, afterglow
  • Digital compass (NORTH)
    Hand indication of north (20 seconds continuous measurement)
    Measures and displays direction as one of 16 points
    Measuring range: 0 to 359°
    Measuring unit: 1°
    Bidirectional calibration
    Magnetic declination correction
    Bearing memory
  • Thermometer
    Display range: –10 to 60°C (14 to 140°F)
    Display unit: 0.1°C (0.2°F)
  • World time
    31 time zones (48 cities + coordinated universal time), city code display, daylight saving on/off
  • 1/100-second stopwatch
    Measuring capacity: 23:59’59.99”
    Measuring modes: Elapsed time, split time, 1st-2nd place times
  • Countdown timer
    Measuring unit: 1 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
  • Low battery warning
  • Button operation tone on/off
  • Regular timekeeping
    Analog: 3 hands (hour, minute (hand moves every 10 seconds), second)
    Digital: Hour, minute, second, pm, month, date, day
  • Accuracy: ±15 seconds per month
  • Approx. battery life: 2 years on SR927W × 2
  • Size of case : 50.8×52.1×16.9mm
  • Total weight : 88g

GA-1000 Comparison Table with similar G-Shock Watches




Price (Amazon)

Year of first Release





Radio-controlled (via atomic watch signals)

±15 seconds per month

Radio-controlled (via atomic watch signals)

SmartWatch Features





Neobrite (hands and hour markers) and LED light (Super Illuminator)

Neobrite (hands and hour markers) and Black light LED

Neobrite (hands and hour markers) and LED light (Super Illuminator)

Case / bezel material


Resin / stainless steel



Sapphire Glass with non-reflective coating

Mineral (Spherical Glass)

Mineral (Spherical Glass)


Solar Powered CTL1616

2 years on SR927W

Solar powered CTL920

Size (mm) *we consider 48.9×42.8×13.4 to be a traditional watch size (as in DW-5600). So you are to compare how far or close the watch is to this size




Full features (if you want to know more)

GW-A1100 Wiki

GW-A1000 Wiki

Recent News about GA-1000 

All Casio GA-1000 News →

You ask, we answer…

What does Digital compass in GA-1000 do?

It measures and displays direction as one of 16 points.

How does Thermometer in GA-1000 work?

It can measure and display the outside temperature in a range from -10 C to 60 C.

What is Neon Illuminator in GA-1000?

Illuminating the display causes the face, and hour and minute hands to glow with neon color, which looks great late on a dark outdoor night.

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