STP1-11 Movement: Functions, History, and Interesting Facts

The STP1-11 is an automatic mechanical caliber produced by the Italian company STP (Swiss Technology Production), a subsidiary of Fossil. This movement features a modern design, reliability, and competitive quality, making it an interesting alternative to traditional Swiss calibers in the more affordable segment.

History

STP was founded in 2012 with the goal of producing their own mechanical movements using Swiss technology. The STP1-11 is one of their key calibers, intended for use in mid-range mechanical watches. Their aim was to offer quality and reliable movements that could compete with popular ETA calibers but at a more favorable price.

Functions and Technical Specifications

• Automatic mechanical movement with rotor winding.

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

• Power reserve approximately 44 hours.

• Displays hours, minutes, seconds, and date with quickset date function.

• Movement diameter about 26 mm, height about 4.6 mm.

• 26 jewels to reduce friction and increase durability.

• Manual winding possible via crown.

• Designed with emphasis on reliability and ease of maintenance.

Interesting Facts

• The STP1-11 is popular among watchmakers wanting to offer mechanical watches with quality movements at a reasonable price.

• The caliber offers the same frequency as many Swiss calibers, ensuring good accuracy and smooth operation.

• Compatible with many common cases, easing its use in various watch models.

• STP focuses on modern manufacturing and quality matching today’s market demands.

• Suitable for anyone seeking a reliable and affordable mechanical movement with quality finishing.

Summary

The STP1-11 is a modern and quality automatic mechanical caliber offering excellent value for money. It is ideal for watch manufacturers and customers looking for a reliable movement with good power reserve, accuracy, and durability without opting for more expensive alternatives.

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