Omega Speedmaster Professional Moonwatch Apollo-Soyuz 20th Anniversary 3691.50.31 (aka: 36915031) Informational Guide & Review
Disclaimer: The video above is for example and general guidelines only. It may not be entirely specific to your exact model, and quality/accuracy depends on third-party availability. If in doubt, please refer to your specific watch handbook or consult a professional.
Required Power Source
Mechanical
This watch uses an automatic or hand-wound mechanical movement. It does not require a battery.
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