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A competitor to Citizen's Eco drive is Seiko's Kinetic drive.

Whereas Citizen's Eco drive utilizes solar conversion to charge an internal lithiumbattery, Seiko's Kinetic drive uses a rotor similar to what is in a automatic mechanical to turn a tiny motor generating electricity which is stored in an on-board capacitor which can run the watch for years on a full charge without any additional charging.

Seiko's design requires more moving parts than Citizen's but moving parts inside of a watch have been common since the first ever watch. There is also slightly more weight in Seiko's energy generator design compared directly to the energy generator in Citizen's.

Overall these two methods of generating power for the quartz movements are very different, but the resulting shelf life between charges and performance are nearly indistinguishable.

It comes down to what is your preference, Citizen or Seiko. Largest and second largest watch manufactures in Japan respectively.

Both manufactures have movements that have beat out Swiss manufactures in Swiss movement competitions for accuracy and dependability.

IMHO the vast differences in these two manufactures are liken to the differences between Pepsi and Coke. Both good but you end up choosing one over the other.


 

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does it charge if you move the watch either way? or only one way?
 

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Well, since an it is not winding, but moving a coil between a magnetic field it would charge either direction.
 

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Tera-Ram wrote:
Seiko's Kinetic drive uses a rotor similar to what is in a automatic mechanical to turn a tiny motor generating electricity which is stored in an on-board capacitor which can run the watch for years on a full charge without any additional charging.
interesting information. that is pretty incredible that it runs for a year on a full charge.
i am not sure why there are watches with batteries at all anymore. why not just make them all mechanical or a set up like seiko or citizen use and just completely remove batteries all together.
 
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