My first watch was a G Shock 30 years ago.
That watch lasted for almost 15 years then I retire it. Its a very solid watch.
During the period I change the battery and the strap. At one time I change the casing due to worn out.
I remember the last seen before I give it away it was left only the casing without the outer rubber casing and strap. And its still working.
At that time I tried to source for the rubber casing but most dealers said no more stock.
Now owing to the sentimental value of that piece I have included the 30th anniversary model DW5030 in my coming Tokyo shopping list.
Its a tough watch. When the going gets tough the tough gets going.