Vibration resistant
Neobrite
Sapphire Crystal
Shock Resistant
Screw Lock Crown
Mud Resistant
200-meter water resistance
Case / bezel material: Stainless steel / Resin
Resin Band
Double LED light
LED light for the face (Full auto LED light, selectable illumination duration, afterglow)
LED backlight for the digital display (Full auto LED light, selectable illumination duration, afterglow)
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
Measures and displays direction as one of 16 points
Measuring range: 0 to 359°
Measuring unit: 1°
60 seconds continuous measurement
Hand indication of north
Bidirectional calibration
Magnetic declination correction
Altimeter
Measuring range: –700 to 10,000 m ( –2,300 to 32,800 ft.)
Measuring unit: 1 m (5 ft.)
Hand indication of altitude differential
Manual memory measurements (up to 30 records, each including altitude, date, time)
Auto log data (High/low altitudes, cumulative ascent and descent)
Others: Relative altitude readings (±100m /±1000m),
Selectable measurement interval: 5 seconds or 2 minutes
*1 second for first 3 minutes only
*Changeover between meters (m) and feet (ft)
Barometer
Display range: 260 to 1,100 hPa (7.65 to 32.45 inHg)
Display unit: 1 hPa (0.05 inHg)
Hand indication of pressure differential
Atmospheric pressure tendency graph
Barometric pressure tendency information alarm (beep and arrow indicates significant changes in pressure)
*Changeover between hPa and inHg
Thermometer
Display range: –10 to 60°C (14 to 140°F)
Display unit: 0.1°C (0.2°F)
*Changeover between Celsius (°C) and Fahrenheit (°F)
World time
29 time zones (29 cities + coordinated universal time), daylight saving on/off, Home city/World time city swapping
1/100-second stopwatch
Measuring capacity: 23:59'59.99''
Measuring modes: Elapsed time, split time, 1st-2nd place times
Countdown timer
Measuring unit: 1 second
Countdown range: 60 minutes
Countdown start time setting range: 1 second to 60 minutes (1-minute increments)
5 daily alarms
Hourly time signal
Hand shift feature (manual or auto (during altitude, barometric pressure, and temperature measurement))
Battery level indicator
Power Saving (display goes blank and hands stop to save power when the watch is left in the dark)
Full auto-calendar (to year 2099)
12/24-hour format
Button operation tone on/off
Regular timekeeping
Analog: 3 hands (hour, minute (hand moves every 10 seconds), second)
Digital: Hour, minute, second, am, pm, date, 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)
25 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)
Size of case: 59.5 × 56.1 × 18 mm
Total weight: 119 g

G-Shock Mudmaster - GWG-1000-1A3JF