I was clearing my cupboard over the weekend and I found my old Casio G-Shock under a pile of paper.
It is still functioning after at least 18 years. The day and date are still accurate but it had gone faster by about an hour.
Gosh I remember this watch had been with me through school and Army day and note the outer rubber protection are all gone but the core watch is still working fine!
Shall give it a new battery and keep it working for sentimental value.