This new addition to the GULFMASTER lineup is just the thing for those who prefer their timekeeping in basic G-SHOCK black.The bezel has a black ion plated finish, while hour markers (except for 12, 3, 6, and 9 o’clock) and the LCD display are also black. Functions include Triple Sensor Version 3 plus Smart Access for easier operation. In addition to barometric pressure, altitude, direction, and temperature readings, TideGraph and Moon Age capabilities provide important information on the go. Sudden major changes in barometric pressure, which can signal upcoming weather changes, are alerted by a dial hand, digital display, and an alarm. All information is made easy to read, even in the dark, by an LED light source located at 6 o’clock. The watch is designed with a maritime gauge look, and large light and sensor buttons provide quick and sure access to vital functions whenever they are needed. This and much more makes this model the perfect choice when unmatched toughness and information about maritime and other quick-changing environmental conditions are required.
Smart Access An electronic crown switch and the use of multiple motors combine to enable conflict-free simultaneous operation of multiple functions, and smooth switching between functions.
TOUGH MOVEMENT A CASIO-original thin analog movement made possible by hybrid mounting protects against damage and enables auto home position correction that helps keep you on time all the time.
TOUGH SOLAR Tough Solar ensures stable operation even when using power-hungry functions.
WAVE CEPTOR (RADIO CONTROLLED) Receives time calibration signals and corrects the time automatically.
MULTIBAND 6 MULTIBAND 6 allows reception of time calibration signals from one of six transmitters around the globe : Germany, The United Kingdom, The United States, China, and Japan (two transmitters).
200-meter water resistance
Case / bezel material: Resin / Stainless steel
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)
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)
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)