Keep informed of the environment around you with this Casio G-Shock Gulfmaster Twin Sensor. A functional digital compass, thermometer and Tide Graph function allows for the most challenging boating adventures. This watch showcases a unique Moon Age indicator, 200 meters of water resistance, auto LED and so much more.

• Shock resistant
• 200M water resistant
• Fly-back function
• Hands move away from LCD screen during measurements
• Twin sensor
• 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
  • Bearing memory
• 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)
• Auto LED (Super Illuminator) light 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: 00:59'59.99"
  • 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)
• 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)
• Battery: SR927W x 2
• Approx. Battery life: 2 years
• Module 5443
• 50.5 x 53.4 x 15.9mm (approximately 2 1/8 inches)