G Shock GWN1000B-1B Gulfmaster Ocean - Solar Atomic

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.

• Multi-Band Atomic Timekeeping (US, UK, Germany, Japan, China)
  Receives time calibration radio signals which keep the displayed time accurate
  Auto receive function (up to 6 times per day/up to 5 times per day for China)
  Manual receive function
  Signal: US WWVB, UK MSF, Germany DCF77, Japan JJY40/JJY60, China BPC
  Frequency: US 60kHz, UK 60kHz, Germany 77.5kHz, Japan 40/60kHz, BPC 68.5kHz
• Tough Solar Power
• Shock Resistant
• Tough Movement
• Auto hand home position correction
• Smart Access Electronic Crown w/Quick-lock
• Fly-back Function
Hands move away from LCD screen during measurments

• 200M Water Resistant
• Low Temperature Resistant (-10 C / 14 F)
• Triple Sensor
• Altimeter
  Measuring range: -700 to 10,000 m (-2,300 to 32,800 ft)
  Measuring unit: 1 m (5ft)
  Manual memory measurements
  Bearing memory
  Auto log data (High/low altitudes, cumulative ascent and descent)
  Others: Relative altitude readings (±100 m/±1000 m)
• Digital Compass
  Measures and displays direction as one of 16 points
  Measuring range: 0 to 359 degrees
  Measuring unit: 1 degree
  60 seconds continuous measurement
  Hand Indication of North
  Bidirectional calibration
  Magnetic declination correction
• Barometer
  Display range: 260 to 1,100 hPa (7.65 to 32.45 inHg)
  Display unit: 1 hPa (0.05 inHg)
  Atmospheric pressure tendency graph
  Hand indication of atmospheric pressure differential
  Atmospheric pressure change alarm & indicator (arrow indicates significant change in pressure)
• Thermometer
  Display range: -10 to 60 C (14 to 140 F)
  Display unit: 0.1 C (0.2 F)
• Moon Data (moon age of the specific data, moon phase graph)
• Tide Graph (tide level for specific date and time)
• Full Auto Dual LED (Super Illuminator) Backlight with Afterglow
  Neo-brite Luminous Hands and Markers
• World Time
  29 time zones (29 cities + UTC), 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: 60 minutes
  Countdown start time setting range: 1 to 60 minutes (1-second and 1-minute increments)
• Full Auto Calendar (Pre-programmed until the year 2099) 
  12/24 Hour Formats
  Button operation tone on/off
  Accuracy: ± 15 seconds per month (with no signal calibration)
• Storage Battery: Solar Rechargeable Battery
  Battery Level Indicator
  Power Saving Function
  Approx. Battery Life: 6 months on full charge (without further exposure to light)
• Module 5371

Band Length: 145mm - 215mm
Size of case/total weight
44.9 X 55.8 X 16.2 mm/101g