I have a Citizen Eco Drive with a caliber C660 movement. Nothing was working, I put it under a light for two days. The two displays blink but can't be changed. The second hand is not moving.

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with a hammer

SOURCE: Citizen Eco Drive

A "non" fully charged watch will sometimes "jump" seconds rather than indicate one second intervals. Charging these small solar panel watches takes forever, in BRIGHT sun. Have you tried leaving it outside, in the sunlight, for at least 12 hours?

SOURCE: Citizen eco-drive problem.

Hi Try www.citizenwatch.com for your manual of instructions.
Try Leaving watch in direct strong sunlight or under bright light for at least 12 hours.

Arturs Kalnins

• 2338 Answers
• Posted on Mar 29, 2009

SOURCE: Need instructions for setting a citizen eco-drive watch

try this link:

http://www.citizenwatch.com/COA/English/settings.asp

Rate, please.

SOURCE: Citizen Eco Drive second hand stoped working

The Citizen Eco Drive watches use special recharchable batteries.
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.