Casio G-Shock Analogue/Digital Gulfmaster Mens Diving Yellow Watch GWN1000-9A

Tough, bright and easy to spot! 

Casio’s Gulfmaster series has a reputation of being tough, as well as easy to use for budding and seasoned navigators. This model is no exception. 

The GWN-1000-9A has what’s known as the Triple Sensor Version 3. This means it has a barometer, a digital compass, altimeter and a thermometer. All tools that are needed to get you where you want to go. 

For mountain climbers, the altimeter is essential, as it can tell you just how high you are, which can help you with preparation for getting further. 

The barometer is also a must for any explorer, because working together with the thermometer it can warn you of any sudden weather issues, so you can dress appropriately. 

The GWN-1000, unlike the 1000C series, is very bright and eye catching. The GWN1000-9ADR is bright yellow, so if you drop it somewhere and retrace your steps, it should be quite easy to find it again.

As it’s a G-Shock watch, Casio made sure that this model is 100m Shock Resistant, meaning that if you bump your wrist, or if it falls, the watch will still function fully. They even included a mineral glass to protect the display and avoid any scratches. 

There are many other functions, which haven’t been discussed yet, so feel free to scroll below for a full list.

• Mineral Glass
• Neobrite
• Shock Resistant
• 200-meter water resistance
• Case / bezel material: Resin / Stainless steel
• Resin Band
• Double LED light
  LED light for the face (Full auto LED light, selectable illumination duration, afterglow)
  LED backlight for the digital display (Full auto LED light, selectable illumination duration, afterglow)
• 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
• The auto hand home position correction
• Digital compass
  Measures and displays direction as one of 16 points
  Measuring range: 0 to 359°
  Measuring unit: 1°
  60 seconds continuous measurement
  Hand indication of north
  Bidirectional calibration
  Magnetic declination correction
• Altimeter
  Measuring range: –700 to 10,000 m (–2,300 to 32,800 ft.)
  Measuring unit: 1 m (5 ft.)
  Hand indication of altitude differential
  Manual memory measurements (up to 30 records, each including altitude, date, time)
  Auto log data (High/low altitudes, cumulative ascent and descent)
  Others: Relative altitude readings (±100m /±1000m), 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)
  Hand indication of pressure differential
  Atmospheric pressure tendency graph
  Barometric pressure tendency information alarm (beep and arrow indicates 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)
• Moon data (moon age of the specific date)
• Tide graph (tide level for specific date and time)
• World time
  29 time zones (29 cities + coordinated universal time), daylight saving on/off, Home city/World time city swapping
• 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 second to 60 minutes (1-minute increments)
• 5 daily alarms
• Hourly time signal
• Hand shift feature (manual or auto (during altitude, barometric pressure, and temperature measurement))
• Battery level indicator
• Power Saving (display goes blank and hands stop 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:
  Analog: 3 hands (hour, minute (hand moves every 10 seconds), second)
  Digital: Hour, minute, second, am, pm, date, day
• Accuracy: ±15 seconds per month (with no signal calibration)
• Approx battery operating time:
  6 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: 44.9 × 55.8 × 16.2 mm
• Total weight: 101 g
• LED:White