Seiko 6720 Movement Details
Seiko caliber 6720 is a high grade analog quartz watch movement. Production started around 1980.
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|Battery:||TR709SW / (Needs to be sent to CoServ for replacement.)|
|Day / date?||No|
|GMT / world time?||No|
|Size / diameter:||18.0mm x 13.0mm|
|Notes:||The world's thinnest movement when it was launched in 1980.|