These new Mudmaster models were created specifically for those whose work takes them into areas where piles of rubble dirt and debris are present. A special vibration-resistant construction lets them stand up to wear while operating cutters crushers drills and other heavy machinery to clear away large obstacles. This is Casio's first analogue watch to come with Mud Resist construction which helps to ensure that nothing gets into the watch when down and dirty work takes you deep into the dirt and sludge. Multiple gaskets are used on the pipes that guide buttons and shafts which keeps mud out. These pipes not only act to protect buttons from impact they also enhance button operation. The screw-in force of the screw lock bezel on an internal gasket further increases mud resistance. A new bezel structure lets you visually check whether the bezel has been screwed in adequately.

In addition Triple Sensor Version 3 capabilities provide instant access to direction barometric pressure and temperature information when needed under tough conditions. The face of the watch is marked with large numerals as 12 3 6 and 9 o'clock for easy reading. The face is illuminated by a double LED light and protected by a sapphire crystal to ensure high visibility under virtually any conditions imaginable. The band surface is processed to resemble a cloth band texture and the hour and minute hands are shaped with points that make them resemble warning markers. All buttons have a checkered surface for surer operation and the overall design is tough and rugged.

Features:

• 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€‚ x €‚56.1€‚ x €‚18€‚mm
• Total weight: 119 g