Casio GRAVITYMASTER GW-A1100R-4AER

Casio GRAVITYMASTER GW-A1100R-4AER
Case / bezel material: Resin
Resin Band
Sapphire Glass with non-reflective coating
TRIPLE G RESIST (Shock resistant, Centrifugal force resistant, Vibration resistant)
Shock Resistant
Neobrite
200-meter water resistance
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
The auto hand home position correction
Digital compass
20 seconds continuous measurement
Hand indication of north
Bidirectional calibration and northerly calibration function
World time
29 time zones (29 cities + coordinated universal time), daylight saving on/off, Home city/World time city swapping
1/20-second stopwatch
Measuring capacity: 1:59'59.95''
Measuring modes: Elapsed time, fly back
Countdown timer
Measuring unit: 1 second
Countdown range: 60 minutes
Countdown start time setting range: 1 second to 60 minutes (1-second increments, 1-minute 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 20 seconds), second), 2 dials (24-hour, day)
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)
22 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)
Size of case / Total weight

Size of case : 48.4×53.8×17.3mm
Total weight : 93