Casio G-Shock GDF100

  • 5 star rating
  • Item #: GDF100-1A
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Casio G-Shock GDF100

  • 5 star rating
  • Item #: GDF100-1A
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Casio

Casio G-Shock GDF100

This totally new design for G-Shock comes packed with altimeter, barometer and thermometer, plus a powerful collection of additional features. Its design has been carefully crafted to incorporate a number of basic elements that reflect G-Shock’s unique individuality.

Features

  • Band Type: Resin
  • Dial Code: Digital
  • Front-Facing Twin Sensor Design (Altimeter/Barometer & Thermometer)
  • Super Illuminator LED
  • 48-City World Time
  • Shock Resistant
  • 200M Water Resistant
  • LED Backlight (Super Illuminator)
  • Altimeter
    Measuring range: -700 to 10,000m (-2,300 to 32,800ft) without reference altitude
    Measuring unit: 5m (20ft)
    Others: Reference altitude setting
  • Barometer
    Display range: 260 to 1,100 hPa (7.65 to 32.45 inHg)
    Display unit: 1 hPa (0.05 inHg)
    Atmospheric pressure differential pointer
  • Thermometer
    Display range: -10 to 60 C (14 to 140 F)
    Display unit: 0.1 C (0.2 F)
  • World Time
    31 times zones (48 cities), city code display, daylight saving on/off
  • 5 Daily Alarms
  • Hourly Time Signal
  • 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: 1 minute to 24 hours (1 hour increments and 1 minute increments)
  • Full Auto Calendar (pre-programmed until the year 2099)
  • 12/24 Hour Formats
  • Button tone operation on/off
  • Accuracy: +/-15 seconds per month (with no signal calibration)
  • Battery: CR2025
  • Approx. battery life: 5 years
  • Module: 3255

  • Description
    Casio

    Casio G-Shock GDF100

    This totally new design for G-Shock comes packed with altimeter, barometer and thermometer, plus a powerful collection of additional features. Its design has been carefully crafted to incorporate a number of basic elements that reflect G-Shock’s unique individuality.

    Features

    • Band Type: Resin
    • Dial Code: Digital
    • Front-Facing Twin Sensor Design (Altimeter/Barometer & Thermometer)
    • Super Illuminator LED
    • 48-City World Time
    • Shock Resistant
    • 200M Water Resistant
    • LED Backlight (Super Illuminator)
    • Altimeter
      Measuring range: -700 to 10,000m (-2,300 to 32,800ft) without reference altitude
      Measuring unit: 5m (20ft)
      Others: Reference altitude setting
    • Barometer
      Display range: 260 to 1,100 hPa (7.65 to 32.45 inHg)
      Display unit: 1 hPa (0.05 inHg)
      Atmospheric pressure differential pointer
    • Thermometer
      Display range: -10 to 60 C (14 to 140 F)
      Display unit: 0.1 C (0.2 F)
    • World Time
      31 times zones (48 cities), city code display, daylight saving on/off
    • 5 Daily Alarms
    • Hourly Time Signal
    • 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: 1 minute to 24 hours (1 hour increments and 1 minute increments)
    • Full Auto Calendar (pre-programmed until the year 2099)
    • 12/24 Hour Formats
    • Button tone operation on/off
    • Accuracy: +/-15 seconds per month (with no signal calibration)
    • Battery: CR2025
    • Approx. battery life: 5 years
    • Module: 3255

Customer Reviews

    • 5.0 star rating
    • Product is OK
      Reviewer: William Davis

      10/23/2015

      The characters of time, etc do not stand out against the dark background. The image of the watch is much different than than watch I received. Very difficult to read the watch even in well lit rooms.

    • 5.0 star rating
    • Awesome watch
      Reviewer: Heavyd243

      8/12/2013

      I go hiking a lot so this watch is awesome when you need to know direction,altitude and whether a storm is coming over the mountain. I had a Casio Forester for 8 years that had the same features so I know that they make a great product.

    • 5.0 star rating
    • A thing of beauty
      Reviewer: Jailer

      2/15/2013

      The coolest, most feature packed G-Shock you'll find for the price. If you read the manual and understand the features, you'll be able to get the most out of this dynamo.

    • 5.0 star rating
    • great watch
      Reviewer: A Man

      11/9/2011

      The screen is easy to see and the light works great for dark conditions. I haven't had a chance to check the barometer and altitude for accuracy but appear to be ok. The temperature tends to read somewhere between your body temp and actual temperature. For an accurate read it needs to be off your wrist for atleast 10-15 minutes which limits its usage as a handy temperature gauge. This does limit the temperature feature somewhat but is still cool. Overall I love the way this watch looks and functions. It is sturdy and waterproof. I have already tested it at the beach and in the pool. Pros: Attractive color and design with nice features. Cons: Pricey for a digital watch. I wish the temperature sensor was accurate while on the wrist. Overall very satisfied and would by a G-Shock again.

    • 5.0 star rating
    • Great Watch
      Reviewer: steve

      11/4/2011

      I have had many high speed watches in my day but this one is one of my favorites! Rugged, easy to use and just a great watch for anyone who works outdoors. Very accurate (you must know how to use a baromoter and understand that the temp will be higher than the actual temp when the watch is on your arm) and user friendly. The led light is BRIGHT! All in all, I really like this watch even when compared to my Suunto MI X9 ($500 watch).

    • 5.0 star rating
    • Great Watch, Good Price
      Reviewer: Chris

      10/9/2011

      The watch came in the new hexagonal black tin from G-Shock. The watch is not a dark black color. It is very matte in color and almost a really dark grey which I really like. The texture of the watch band is great. Hard to explain exactly, its a mixture of plastic and rubber. The watch feels great on the wrist, not too heavy at all. The display is very bright and crisp. The pictures don't do justice, you really have to see it in person. One big thing I noticed is the four red sensor dots on the left of the watch are not as big as they look in pictures. They are actually pretty small. I had thought they were buttons at first but they are actually the sensor for the barometric pressure Overall Extremely happy with this purchase.

    • 5.0 star rating
    • Great Features + Unique Style = My New Favorite Wa
      Reviewer: Mat

      10/2/2011

      I received the watch in less time than originally estimated so that's always a plus. I purchased this G-shock for its altimeter function and durability and so far it has exceeded my expectations. The face is large and the backlight is an amazing blue. It was able to automatically decipher between the elevation in one of the buildings I work at while riding the elevator. I would recommend this G-shock to anyone.

    • 3.0 star rating
    • fine
      Reviewer: Fabinho

      9/5/2011

      its a g-shock: big, resistant, nothing to worry about. but the extras (thermometer, altimeter and barometer) are not as reliable. the thermometer catches the heat of your body, so you need to take it out and wait to get a proper temperature. the altimeter and barometer go crazy all the time. it is a good watch for general use, but mediocre if you depend on the informations from the extras.