Constant watch problem
The Citizen Eco Drive watches use special recharchable batteries.
Not all watch repair man understand this. If you are unlucky they tried to replace the battery with an ordinary one.
Replaced crystal could be 2 things, logical is the timing quartz crystal was replaced by swapping out most of the electronics, second is they talked about the glass being replaced - I do not expect so.
Call or email Citizen and explain; keep the watch handy so you can read them the numbers from the back.
I started collecting a couple of watches and I noticed sometimes a jeweler replaces them with an ordinary battery. The watch will work and at the same time it will try to recharge this one until it explodes! In newer models they made it harder to use the non-rechargable ones by adding a special connector or clip to the rechargable battery types.
Okay, if you say your battery goes bad, or watch does not run okay? It may have lost the charge over time. First thing to try is to leave it on the window sill so the dial is in the sun. It will start ticking, but please leave it out there for 3 days to a week. The seconds hand will tick irregularly in steps of one and two seconds, to show you it wants you to readjust the time, as it knows it has lost time. Adjust the time and it should run smoothly.
The seconds hand should run in single second steps, if it takes steps regularly, but every 3 seconds or so, it tries to tell you that its power level is going down. It will be able to continue for one or two days, but you should get it into the sun more often.
Charging the battery under a lamp is possible, however this heats up the watch and this may reduce battery life. As long as the watch keeps running I believe it should keep good time. It is quartz anyway. If this is not the case, and a good sunbath does not help, the mechanism could be running heavy, possibly due to overheating the watch; no help there...
If you need to know more about the Eco Drive, look for detail tech manuals for all types here: http://www.citizenwatch.com/downloads/tech/tech.htm
Those are great watches as long as you remember it needs light to charge.
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