The Seiko caliber 78A is a vintage time-only quartz movement manufactured in Japan. It uses an SR927SW battery and typically contains 395 to 399 jewels. The movement includes a trimmer condenser for frequency adjustment and is commonly found in watches with dial or case codes beginning with 7800.
TECHNICAL SPECIFICATIONS
Movement Type
Quartz
Display Type
Analog
Winding
Quartz (Battery)
More Seiko movements
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