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Detailed technical specifications of the SEIKO Quartz LC Calibre 0439A.
Highlights the thin movement, practical functions, and excellent qualities of the watch.
Instructions on switching between time and calendar displays.
Guide on activating the watch's illumination feature.
Step-by-step guide for setting the watch's time and date.
Notes and procedures following battery replacement.
Lists necessary tools and materials for servicing the watch.
Detailed steps for taking apart and putting back the watch case.
Instructions for movement disassembly, reassembly, and lubrication.
Guidelines for cleaning watch parts.
A flowchart for diagnosing and adjusting watch malfunctions.
Lists common malfunctions and corresponding checking points.
Detailed steps for checking battery voltage, conductivity, and accuracy.
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