The new Gulfmaster ocean concept G-Shock that predicts weather changes. For the toughest men who challenge the deepest seas, Casio presents the ultimate maritime G-Shock with Smart Access technology.Equipped with Triple Sensors for Measuring Direction, Atmospheric Pressure/Altitude, and Temperature Hands Serve to Indicate Atmospheric Pressure and Compass Bearing. The GWN1000B-1B Gulfmaster is a black watch with a blue face and ion plated stainless steel bezel.
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Atomic Timekeeping
Shows accurate time by receiving radio signals of standard time information. JJY= Corresponds to both of Japanese standard waves JJY (40kHZ/60kHZ); WWVB= Corresponds to the USA standard wave WWVB (60kHz); MSF/DCF77= Corresponds to UK and Germany standard waves MSF/DCF77 (60kHz/77.5kHz); BPC= Corresponds to Chinese standard wave BPC (68.5kHz)
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Solar Power
A solar cell provides power for operation
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Auto-Hand Location
Using an LED, the positions of the hour, minute and second hands are checked at the 55'00" of every hour to ensure correct hand positioning. If the hand time does not coincide with the counter within the IC, the movement corrects the hand position automatically
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LED Light (Full Auto Double Illuminator)
Separate lighting for the digital and analog portions of the face for easy reading. Illumination is automatically disabled when surrounding light is sufficient and enabled under dim or dark conditions
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Compass
A built-in direction sensor detects magnetic north
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Altitude Measurement
A built-in pressure sensor measures barometric pressure, which is converted to relative altitude
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Barometric Pressure Measurement
A built-in pressure sensor measures barometric pressure, which is shown on the display
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Temperature Measurement
A built-in temperature sensor measures the temperature.
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Tide Graph
Graphically displays tides based on location information and lunitidal interval time
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World Time (R29)
Displays the current time in major cities and specific areas around the world. R: Current time in major cities around the world. Values indicate number of cities/areas
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Daily Alarm, Hourly Time Signal (5)
The daily alarm sounds each day at the time you set. The value indicates how many alarms are available. The hourly time signal causes the watch to beep every hour on the hour
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Stopwatch (1/100 24HR)
Accurate measurement of elapsed time with the touch of a button. The fraction indicates the unit of measurement, while the time figure indicates the maximum time measurement
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Timer (60 MIN)
Counts down from a start time specified by you. The value indicates the number of timers available, while the time figure indicates the maximum starting time. “REPEAT” indicates Auto Repeat, which automatically restarts timing at the end of each countdown
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Full Auto-Calendar
Allowances are made automatically for months of different lengths, including leap year
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12/24-Hour Timekeeping
Times can be displayed in either 12-hour or 24-hour format
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Operation Tone On/Off
The tone that sounds to signal a mode change or other operation can be turned on and off
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Battery Level Indicator
Indicator shows the current battery level
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Shock Resistant
Shock-resistant construction protects against impact and vibration
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Neobrite
A luminous coating provides long-term illumination in the dark after only short exposure to light
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Water Resistant (20 BAR)
The “BAR” value indicates the number of atmospheres to which water resistance is ensured. 20 BAR means water resistance to 20 atmospheres. Watches marked “200m” have the same water resistance as 20 BAR watches
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Mineral Glass
Hard glass resists scratching
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Band
Resin
| Case / bezel material: Resin / Stainless steel |
| Resin Band |
| Neobrite |
| Shock Resistant |
| Mineral Glass |
| 200-meter water resistance |
| 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 / Total weight |
| Size of case : 44.9×55.8×16.2mm |
| Total weight : 101g |
