I brought a Citizen Eco-Drive watch about 17 years ago and for the last 10 years have worn it as my every day watch.
I have never had it serviced and it has always kept good time.
My only criticism is that in the last couple of years, it struggles slightly with maintaining charge through the winter months. I think that this is because the battery is now old and less efficient and because it spends more time hidden under long sleeves and starved of the light that it needs to re-charge.
When I can get round to it, I will send it off for a service.
I have never had it serviced and it has always kept good time.
My only criticism is that in the last couple of years, it struggles slightly with maintaining charge through the winter months. I think that this is because the battery is now old and less efficient and because it spends more time hidden under long sleeves and starved of the light that it needs to re-charge.
When I can get round to it, I will send it off for a service.