Introducing the GRAVITYMASTER, GPW1000 First GPS ATOMIC SOLAR HYBRID with CASIO-original GPS Hybrid radio-controlled technology built inside a TRIPLE G Shock Resistant structure. This unique technology combines Multi-band 6 capability to receive any one of six time calibration signals around the globe with a receiver that acquires position and time information from GPS satellites.

• Sapphire Glass
• Triple G Resist
• Neobrite
• 200-meter water resistance
• Case / bezel material: Stainless steel / Resin
• Carbon fiber insert Resin Band
• Solar powered
• LED light (Super Illuminator)
• Afterglow
• GPS signal reception: Auto receive (time information, once/day); Manual receive (position information, time information)
• 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
• 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
• Airplane mode
• World time: 40 time zones (27 cities + coordinated universal time), city code display, daylight saving on/off
• 1/20-second stopwatch
• Measuring capacity: 23'59.95''
• Measuring mode: Elapsed time
• Countdown timer
• Measuring unit: 1 second
• Countdown range: 24 hours
• Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments)
• Daily alarm
• Low battery alert
• Power Saving (hands stop to save power when the watch is left in the dark)
• Full auto-calendar (to year 2099)
• Date display
• Regular timekeeping:
  Analog: 3 hands (hour, minute (hand moves every 10 seconds), second) 3 dials (24-hour, world time hour and minute, day), date
• Accuracy: +/-15 seconds per month (with no signal calibration)
• Approx. battery operating time:7 months on rechargeable battery (operation period with normal use without exposure to light after charge) 18 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)
• Size of case: 66 x 56 x 18.8 mm
• Total weight: 126 g
• LED:White