Casio G-Shock GW-9400 Watches

Until recently, the only representative of the G-Shock Rangeman line was to survive in harsh environmental conditions. The case is designed in such a way as to withstand the most aggressive conditions – strong impacts, dust and dirt will not do any harm to the watch. Brutal appearance and a fully electronic dial will appeal to serious men. For those who often have to be left alone with nature and its whims, the GW-9400 has a triple sensor – the barometer can not only predict the weather by changes in atmospheric pressure, but also show altitude, the thermometer measures air temperature, and digital the compass will indicate the correct direction of travel. To monitor solar activity, there is a function of showing the time of sunrise / sunset at any point in the world. Thanks to the solar battery, the watch will not let you down at the most crucial moment, and the radio synchronization function automatically corrects the time for the most accurate radio towers. The basic functionality also has not gone anywhere – a stopwatch, timer, alarm clock, world clock and a bright automatic display backlight.

Important Information

GW-9400 Model Range *may be updated


The most distinctive specs of GW-9400 *Editorial
— 200-meter water resistance
(good for swimming but not for deep diving)
— Tough Solar (CASIO’s original solar-charging system converts not only sunlight but also light from fluorescent lamps and other sources into power)
— Radio-controlled Watch; Multi band 6 (additional way for time sync. This watch receives time calibration radio signals that keep the displayed time accurate)
— 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)
Barometer (measures the air pressures and displays tendencies in the weather)
Altimeter (The electronic mechanism “estimates” the altitude based on the air pressure)
Sunrise, sunset time display (Sunrise time and sunset time for specific date, daylight pointers)


Official GW-9400 Video

Official Marketing Focus from Casio

Introducing RANGEMAN, the latest addition to the Master of G series of tough and rugged timepieces that are designed and engineered to stand up to the most grueling conditions imaginable. RANGEMAN is Triple Sensor equipped, which makes it capable of keeping altitude, barometric pressure, temperature, and direction readings at your fingertips.
Cylindrical buttons provide outstanding operation and improved resistance to impact. The frequently used sensor button (center right) has a metal cover that protects it against lateral impact and keeps foreign matter out. Pressing the sensor button in any mode takes you directly to a sensor screen. Each sensor mode has its own audible tone, which means you can determine which mode you are entering without even looking at the watch.
All of this plus one-touch time recording, one-touch elapsed time measurement, world-renowned G-SHOCK toughness and durability, and much more makes RANGEMAN the perfect choice for rangers, rescue crews, and anyone else whose profession or activities demand unfailing reliability.

Official GW-9400 Specs / Features *for base version GW-9400-1

  • Case / bezel material: Resin
  • Resin Band
  • Mineral Glass
  • Shock Resistant
  • 200-meter water resistance
  • LED backlight (Super Illuminator)
    Full auto LED light, selectable illumination duration, afterglow
  • Tough Solar (Solar powered)
  • Time calibration signal reception
    Auto receive up to six* times a day (remaining auto receives canceled as soon as one is successful)
    *5 times a day for the Chinese calibration signal
    Manual receive
    The latest signal reception results
  • Time Calibration Signals
    Station name: DCF77 (Mainflingen, Germany)
    Frequency: 77.5 kHz
    Station name: MSF (Anthorn, England)
    Frequency: 60.0 kHz
    Station name: WWVB (Fort Collins, United States)
    Frequency: 60.0 kHz
    Station name: JJY (Fukushima, Fukuoka/Saga, Japan)
    Frequency: 40.0 kHz (Fukushima) / 60.0 kHz (Fukuoka/Saga)
    Station name: BPC (Shangqiu City, Henan Province, China)
    Frequency: 68.5 kHz
  • Digital compass
    Measures and displays direction as one of 16 points
    Measuring range: 0 to 359°
    Measuring unit: 1°
    60 seconds continuous measurement
    Graphic direction pointer
    Bidirectional calibration
    Magnetic declination correction
    Bearing memory
  • Altimeter
    Measuring range: –700 to 10,000 m (–2,300 to 32,800 ft.)
    Measuring unit: 1 m (5 ft.)
    Altitude Memory Function:
    Manual Readings: 40 records, each containing date and time, direction angle, altitude, barometric pressure, and temperature
    Auto Save Data: High altitude, low altitude, cumulative ascent, cumulative descent (1 value each)
    Others: Relative altitude readings (–3,000 to 3,000 m)
    Selectable measurement interval: 5 seconds or 2 minutes
    *1 second for first 3 minutes only
    *Changeover between meters (m) and feet (ft)
  • Barometer
    Display range: 260 to 1,100 hPa (7.65 to 32.45 inHg)
    Display unit: 1 hPa (0.05 inHg)
    Atmospheric pressure tendency graph (past 42 hours of readings)
    Atmospheric pressure differential graphic
    Barometric pressure tendency information alarm (beep and arrow indicate significant changes in pressure)
    *Changeover between hPa and inHg
  • Thermometer
    Display range: –10 to 60°C (14 to 140°F)
    Display unit: 0.1°C (0.2°F)
    *Changeover between Celsius (°C) and Fahrenheit (°F)
  • Manual data recording of up to 40 records (altitude, barometric pressure / temperature, bearing, time (Time Stamp))
  • World time
    31 time zones (48 cities + coordinated universal time), daylight saving on/off
  • Sunrise, sunset time display
    Sunrise time and sunset time for specific date, daylight pointers
  • 1/100-second stopwatch
    Measuring capacity: 999:59’59.99”
    Measuring modes: Elapsed time, split time, 1st-2nd place times
  • 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)
  • 5 daily alarms (with 1 snooze alarm)
  • Hourly time signal
  • Battery level indicator
  • Power Saving (display goes blank to save power when the watch is left in the dark)
  • 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 (with no signal calibration)
  • Approx battery operating time:
    8 months on rechargeable battery (operation period with normal use without exposure to light after charge)
    23 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge) 
  • Size of case : 55.2×53.5×18.2mm
  • Total weight : 93g

Recent News about GW-9400 

All Casio GW-9400 News →


You ask, we answer…

What does Tough Solar in GW-9400 mean?

CASIO’s original solar-charging system that converts not only sunlight but also light from fluorescent lamps and other sources into power.

How does Radio-controlled Watch in GW-9400 work?

This is additional way for time sync. This watch receives time calibration radio signals that keep the displayed time accurate.

What is Barometer in GW-9400?

It measures the air pressures and displays tendencies in the weather.

How does Altimeter in GW-9400 work?

The electronic mechanism “estimates” the altitude based on the air pressure.

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