You can purchase this Casio G-shock Mudman through the link HERE : http://amzn.to/2yRbGLC
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I will share with you, my experience with this really nice watch Casio G-9000MS-1 Military Series is very functional, cost under 100$, the toughest of G-shock.
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Made in USA or Imported
Shock-resistant sports watch featuring auto LED backlight, 5 alarms, hourly time signal, flash alert, 1/100 sec stopwatch, countdown timer, full auto calendar, and 12/24 hour formats
52 mm resin case with mineral dial window
Quartz movement with digital display
Resin band with buckle closure
Water resistant to 200 m (660 ft): In general, suitable for professional marine activity and serious surface water sports, scuba diving