Soprod SOP 813 Movement: Functions, History, and Interesting Facts

The Soprod SOP 813 is a Swiss automatic mechanical caliber with a GMT function, allowing simultaneous display of two time zones. This movement is valued for its accuracy, reliability, and modern construction, making it an ideal choice for travelers and professionals.

History

Founded in 1966 and now part of the Festina Group, Soprod specializes in producing high-quality and innovative mechanical movements. The SOP 813 is one of their advanced calibers, expanding their portfolio with the GMT complication. It was developed to meet market demands for precise and user-friendly watches capable of tracking multiple time zones.

Functions and Technical Specifications

• Automatic mechanical movement with GMT function (second time zone).

• Frequency of 28,800 vibrations per hour (4 Hz), ensuring smooth seconds hand movement.

• Power reserve of approximately 42 hours.

• Displays hours, minutes, seconds, date, and second time zone via a separate GMT hand.

• Movement diameter about 25.6 mm, height about 5.4 mm.

• 25 jewels to reduce friction and increase durability.

• Manual winding possible via crown.

• Modular construction for easy servicing and potential function expansion.

Interesting Facts

• The Soprod SOP 813 is especially suitable for watches aimed at travelers and professionals needing to track multiple time zones, thanks to its design and accuracy.

• The caliber is compatible with most cases designed for mechanical calibers of similar size.

• The movement offers simple and intuitive GMT hand operation, making second time zone adjustment easy.

• Due to robust construction and quality materials, the SOP 813 is resistant to shocks and magnetic influences.

• Soprod focuses on innovation and quality, as demonstrated by the reliability of this caliber in practice.

Summary

The Soprod SOP 813 is a modern, precise, and reliable automatic caliber with GMT function, an ideal choice for those needing to track multiple time zones without compromising accuracy or comfort. With its modular design and quality craftsmanship, this movement combines Swiss tradition with modern technology.

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