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Casio G-Shock Analog/Digital Gulfmaster Mens Black/Blue Watch GN1000B-1A

Quick Overview

  • Mineral Glass
  • Neobrite
  • 200-meter water resistance
  • Case / Bezel / Band material: Resin / Stainless steel / Resin
  • Size of case / Weight: 50.5 × 53.4 × 15.9 mm / 82g
  • Regular Price: $569.00

    Special Price $409.00

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    If you're out at sea, you need a sturdy watch. One that you can take out at sea, and not worry about what will happen if you trip or bang the watch. On top of that, you need a watch that's not just there to look pretty, but is useful at sea. That's why the GN-1000B-1A is the watch for the job!

    The watch is completely black with a blue tint on the bezel. Each function is clearly labelled on the bezel, right above the corresponding button. Inside the display you'll find an analogue tide meter at the bottom, as well as a graphical moon phase indicator, which is extremely useful when getting ready for the tide coming in. On the left there's a mode indicator, with the arrow showing exactly what mode you're using.

    When you've got an analogue/digital watch, sometimes it gets hard to read the digital time (especially when the arrows are big and block the screen. Casio solved this issue by giving the watch a Smart Movement feature. This means that pressing the button makes the arrows move out of the way, and then they'll go back exactly where they need to be.
    • Mineral Glass
    • Neobrite
    • Shock Resistant
    • 200-meter water resistance
    • Case / bezel material: Resin / Stainless steel
    • Resin Band
    • LED light (Super Illuminator)
      Auto light switch, selectable illumination duration (1.5 seconds or 3 seconds), afterglow
    • Digital compass (NORTH)
      Hand indication of north (60 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
      29 time zones (29 cities + coordinated universal time), daylight saving on/off
    • Moon data (moon age of the specific date, moon phase graph)
    • Tide graph (tide level for specific date and time)
    • 1/100-second stopwatch
      Measuring capacity: 59'59.95''
      Measuring modes: Elapsed time, lap time, split time
    • 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
    • Hourly time signal
    • Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.)
    • 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, pm, month, date, day
    • Accuracy: ±15 seconds per month
    • Approx. battery life: 2 years on SR927W × 2
    • Size of case: 50.5 × 53.4 × 15.9 mm
    • Total weight: 77 g
    • LED:White
    1. Marine watch review by on

      I didn't know what to expect when I bought this watch. All I wanted was for it to be tough enough to withstand some of my training sessions. This more than lived up to its promise! I've been getting through so much, I'm in the Navy so that's why I bought this watch.

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