Casio G-Shock Frogman Master of G ISO 200m Men's Watch GWF-A1000-1A4
Model: GWF-A1000-1A4
Case / bezel material: Carbon / Stainless steel
Resin Band
Neobrite
Spherical Glass
Screw Lock Crown
Carbon Core Guard structure
Magnetic Resistant
Shock Resistant
Sapphire Glass with non-reflective coating
Black ion plated case
ISO 200 meters Water Resistance
LED light (Super illuminator)
Afterglow
Tough Solar (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
Diving mode
Dive time: 1 second increments, up to 1:59'59
Surface time measurement: up to 24 hours
Log data: up to 30 records
Mobile link (Wireless linking using Bluetooth®)
The auto hand home position correction
Dual time
27 time zones, Home time swapping, auto summer time (DST) switching
1-second stopwatch
Measuring capacity: 23:59'59
Countdown timer
Measuring unit: 1 second
Countdown range: 24 hours
Countdown start time setting range: 1 minute to 24 hours (1-second increments)
Daily alarm
Power Saving (hands stop to save power when the watch is left in the dark)
Hand shift feature (Hands move out of the way to provide an unobstructed view of indial)
Full auto-calendar (to year 2099)
Date display
Day indicator
Regular timekeeping
Analog: 3 hands (hour, minute (hand moves every 5 seconds), second), 3 dials (dual time hour and minute, dual time 24 hour, day)
Accuracy: ±15 seconds per month (with no signal calibration and mobile link function)
Approx. battery operating time:
5 months on rechargeable battery (operation period with normal use without exposure to light after charge)
30 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)
Size of case : 56.7×53.3×19.7mm
Total weight : 119g
Packaging: New in box with manual
Case / bezel material: Carbon / Stainless steel
Resin Band
Neobrite
Spherical Glass
Screw Lock Crown
Carbon Core Guard structure
Magnetic Resistant
Shock Resistant
Sapphire Glass with non-reflective coating
Black ion plated case
ISO 200 meters Water Resistance
LED light (Super illuminator)
Afterglow
Tough Solar (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
Diving mode
Dive time: 1 second increments, up to 1:59'59
Surface time measurement: up to 24 hours
Log data: up to 30 records
Mobile link (Wireless linking using Bluetooth®)
The auto hand home position correction
Dual time
27 time zones, Home time swapping, auto summer time (DST) switching
1-second stopwatch
Measuring capacity: 23:59'59
Countdown timer
Measuring unit: 1 second
Countdown range: 24 hours
Countdown start time setting range: 1 minute to 24 hours (1-second increments)
Daily alarm
Power Saving (hands stop to save power when the watch is left in the dark)
Hand shift feature (Hands move out of the way to provide an unobstructed view of indial)
Full auto-calendar (to year 2099)
Date display
Day indicator
Regular timekeeping
Analog: 3 hands (hour, minute (hand moves every 5 seconds), second), 3 dials (dual time hour and minute, dual time 24 hour, day)
Accuracy: ±15 seconds per month (with no signal calibration and mobile link function)
Approx. battery operating time:
5 months on rechargeable battery (operation period with normal use without exposure to light after charge)
30 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)
Size of case : 56.7×53.3×19.7mm
Total weight : 119g
Packaging: New in box with manual