I've had this particular watch for 14 years now. My dad went halves with me for it for my 21st birthday. I paid an absolute mint for it at the time (probably more than it is worth), but it has never needed a new battery or run out of charge in that time.(Image removed from quote.)Apparently, these batteries are only supposed to last about 10 years, so I guess it's running on borrowed time
I have never heard of a expire date on an Eco Drive I know that ever now and then the capacitor jacks up but it is very rare.