Hangzhou 7500 Movement: Functions, History, and Interesting Facts

The Hangzhou 7500 is an automatic mechanical movement manufactured by the Chinese company Hangzhou Watch Company. This caliber represents a more advanced and modern version of the brand’s traditional mechanical movements, designed for higher-end watches with automatic winding and quality construction.

History

Founded in the 1970s, Hangzhou Watch Company is one of the leading manufacturers of mechanical watch movements in China. The 7500 model is the result of long-term development, bringing improvements in accuracy, reliability, and performance compared to older models. The movement is inspired by classic calibers but offers modern technology and design.

Functions and Technical Specifications

• Automatic mechanical movement with manual winding capability

• Frequency of 21,600 vibrations per hour (3 Hz)

• Power reserve of approximately 40 hours

• Displays hours, minutes, seconds, and date (date window at 3 o’clock)

• Movement diameter approximately 28.5 mm, height approximately 5.5 mm

• Number of jewels (rubies): 21

• Precise craftsmanship and robust construction

• Automatic winding design with ball bearing for improved reliability and smoothness

Interesting Facts

• The Hangzhou 7500 is often used in mid-to-high-end watches where reliability and accuracy are required at a reasonable price.

• Thanks to the combination of traditional mechanical design and modern features, it is popular among collectors and mechanical watch enthusiasts.

• The movement offers the convenience of automatic winding with the option for manual winding, increasing its flexibility.

• The ball bearing construction increases the rotor mechanism’s lifespan and reduces wear.

• Suitable for both elegant and sports watch models due to its versatility and durability.

Summary

The Hangzhou 7500 is a quality, reliable, and modern automatic mechanical movement that combines traditional values with modern technologies. It is an ideal choice for those who want watches with a precise and durable movement at a reasonable price.

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