This new MUDMASTER model was created especially for this whose work takes it into areas where piles of rubble, dirt, and debris are present. - Shock & Vibration Resistant - Screw Lock Crown - Neobrite - Sapphire Glass with non-reflective coating - Mud Resistant - 200-meter water resistance - Green Band - Case / bezel material: Resin / Stainless steel - Tough Solar (Solar powered) - Time Calibration Signals - The auto hand home position correction - Digital compass - Altimeter - Barometer - Thermometer - World time -29 time zones - 1/100-second stopwatch - Countdown timer - 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