World time
38 time zones (55 cities + coordinated universal time), daylight saving on/off, auto summer time (DST) switching, Home city/World time city swapping
Sunrise/sunset display
Sunrise, sunset time display
Sunrise time and sunset time for specific date
Stopwatch
1/100-second stopwatch
Measuring capacity: 23:59'59.99''
Measuring modes: Elapsed time, split time, 1st-2nd place times
Timer
Countdown timer
Measuring unit: 1 second
Countdown range: 60 minutes
Countdown start time setting range: 1 minute to 60 minutes (1-minute increments)
Alarm/hourly time signal
5 daily alarms
Hourly time signal
Light
Double LED light
LED light for the face (Full auto LED light, Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
LED backlight for the digital display (Full auto LED light, Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
Light color
LED:White
Calendar
Full auto-calendar (to year 2099)
Mute feature
Button operation tone on/off
Hand home position correction feature
The auto hand home position correction
Energy saving feature
Power Saving (display goes blank and hands stop to save power when the watch is left in the dark)
Battery display/alert
Battery level indicator
Run time
Approx. battery operating time:
6 months on rechargeable battery (operation period with normal use without exposure to light after charge)
24 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)
Accuracy: ±15 seconds per month (with no signal calibration and mobile link function)
12/24-hour format
Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.)
Regular timekeeping:
Analog: 3 hands (hour, minute (hand moves every 10 seconds), second),
2 dials
Digital: Hour, minute, second, pm, month, date, day
Time adjustment details
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
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
Sapphire crystal with anti-reflective coating
Screw Lock Crown
Surface treatment - DLC-treated (stainless steel portion)
Gold ion plated bezel
Neobrite
Smartphone Link feature
Mobile link (Wireless linking using Bluetooth®)
Apps
CASIO WATCHES
App connectivity feature
Auto time adjustment
Easy watch setting
Approximately 300 world time cities
App information
Time & place
Mission log
Location Indicator
Location Memory
Mode/Display switching customization
Auto altitude correction
Phone finder
Case and bezel material - Bio-based Carbon / Stainless steel
Bio-based resin band
Shock Resistant
Vibration resistant
Mud Resistant
Carbon Core Guard structure
200-meter water resistance
Time adjustment
Radio-controlled Watch; Multi band 6
Bluetooth: Connects to a smartphone and automatically adjusts the time
Power supply and battery life
Tough Solar (Solar powered)
Sensor feature
Compass function:
16 direction / direction angle (0 to 359°) measured, direction continuous measurement (60 seconds), north direction guideline function.
Bearing memory function. Automatic horizontal, magnetic declination, and orientation correction function.
Barometric pressure measurement function
(measurement range: 260~1,100hPa (7.65~32.45inHg), 1hPa (0.05inHg)),
Barometric pressure trend graph display (past 20 hours displayed), pressure difference indicator (±10hPa)
Barometric pressure trend information alarm (when a characteristic change in air pressure occurs, it will be notified by arrows and sound notification)
The pressure trend graph can be changed to measurement every 30 minutes.
That's for the last 5 hours.
*Changeover between hPa and inHg
Altitude measurement function/relative altimeter
(measurement range: -700 to 10,000 m (-2,300 to 32,800 ft), in units of 1 m (5 ft))
Advanced memory (up to 30 manual memories of measurement date, month, time, and altitude),
Automatic recording data (highest/lowest altitude, auto accumulation (ascent/descending) memory)
Altitude trend graph, altitude difference indicator (±100 m/ ±1,000 m)
Measurement interval setting function (every 5 seconds / 2 minutes)
*Every 1 second for the first 3 minutes only
*Changeover between meters (m) and feet (ft)
Temperature measurement function
(measurement range: -10 to 60 °C (14 °F to 140 °F), 0.1 °C (0.2 °F))
*Changeover between Celsius (℃) and Fahrenheit (℉)
Case size (L× W× H)
58.7 × 52.1 × 16.2 mm
Weight
114 g

G-Shock Mudmaster - GWG-B1000MG-1A9JR