Casio G-Shock GGB100XM-1A MUDMASTER Carbon Quad Sensor Bluetooth Mens WatchThe 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 another step further with the ability to handle the roughest rubble and debris strewn terrains, earning the appreciation and trust of rangers and rescue teams operating in extreme environments. The GGB100XMB 1A features a silvery stainless steel bezel with a honing