When it comes to Military Wristwatches the G-Shock has established itself as one of the foremost watches worn by those in the military. Especially popular with as a Special Ops Watch. The G-Shock Mudman G9000 is one of the most popular choices. Extremely tough and reliable, but affordable enough to be replaced (you would hardly want to take your Rolex with you into the field of battle).
There is no doubt that the G-Shock Mudman is built for extreme conditions, and it features a special casing that prevents dust, dirt and water getting inside it.
The grey model is pretty hard to find, but is reviewed in video below. It features all the classic G-Shock features such as Alarms, Stopwatches and Countdown timers.
Check this great military watch review below: