G-Shock Master OF G Mudmaster Black Resin Strap Men's Watch GWGB1000-1A

This analog-digital combination watch delivers more comfortable fit and outstanding durability with a robust exterior incorporating a guarding structure built with metal components. The watches of the G-SHOCK Master of G line, developed for professionals working in the harshest environments, come equipped with even tougher functionality. And the MUDMASTER takes this even further with the ability to handle the roughest on-land environments, earning the appreciation and trust of rangers and rescue teams operating in extreme environments.

Basic Information

• Case size (L× W× H) 58.7 × 52.1 × 16.2 mm
• Weight: 114 g
• Case and bezel material: Resin (Bio-based) / Stainless steel
• Band: Bio-based resin band
• Construction: Shock Resistant, Vibration resistant, Mud Resistant, Carbon Core Guard structure
• Water resistance 200-meter water resistance
  
• Time Adjustment: Radio-controlled Watch; Multi band 6
• 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
• Measuring range: 0 to 359°
• (measurement range: -10 to 60 °C (14 °F to 140 °F), 0.1 °C (0.2 °F)) *Changeover between Celsius (℃) and Fahrenheit (℉)

Smartphone Link/ App Connectivity feature

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

Exterior

• Glass Sapphire crystal with anti-reflective coating
• Compatible band Size: 145 to 215 mm
• Crown: Screw Lock Crown
• Surface Treatment: 
  DLC Coating bezel
  Gray ion plated bezel
• Other: Neobrite

Watch Feature

World time

• 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 24 hours (1-minute increments and 1-hour 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

Energy saving feature

• Power Saving (hands stop to save power when the watch is left in the dark)

Battery display/alert

• Low battery alert

 Accuracy

• ±15 seconds per month (with no signal calibration)

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)

 Other features

• 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