Seagull ST1903/ST1902 Movement User Manual

The Seagull ST1903 and ST1902 movements are renowned for their quality and reliability, widely used in various high-performance timepieces. These movements have garnered appreciation from horology enthusiasts for their exceptional performance and craftsmanship. This user manual aims to help you understand and maintain your Seagull timepiece effectively.

1. Movement Overview

1.1 ST1903 Movement

Type: Manual-winding mechanical movement.

Frequency: Beats at 28,800 vibrations per hour.

Power Reserve: Approximately 40 hours.

Functionality: Features a chronograph function for timing.

1.2 ST1902 Movement

Type: Automatic-winding mechanical movement.

Frequency: Similar to ST1903, beats at 28,800 vibrations per hour.

Power Reserve: Approximately 48 hours.

Functionality: Classic two-hand design without chronograph functionality.

2. Operating Instructions

2.1 Crown Operations

Winding: To wind the movement, turn the crown clockwise. It’s recommended to wind the watch before wearing it to ensure sufficient power reserve.

Setting the Time: Pull the crown out to the second position to adjust the time. Avoid adjusting the time between 9 PM and 3 AM to prevent damaging the movement’s internal gears.

2.2 Wearing Recommendations

To maintain optimal movement performance, wear the watch regularly, ideally for at least 8 hours a day, to allow the automatic movement (ST1902) to effectively wind itself. If not worn for an extended period, remember to wind the watch manually.

2.3 Chronograph Functionality (ST1903 only)

Starting the Chronograph: Press the top button on the crown to start timing.

Stopping the Chronograph: Press the same button again to halt the timing.

Resetting the Chronograph: Press the bottom button on the crown to reset the chronograph to zero.

3. Maintenance and Care

3.1 Regular Cleaning

Clean the watch regularly with a soft, dry cloth to prevent dirt buildup.

For water-resistant models, ensure the crown and case are properly sealed before exposure to water.

3.2 Periodic Servicing

It is recommended to service the movement every 3-5 years. This includes cleaning internal components and replacing lubricants to ensure long-term functionality.

3.3 Avoiding Impact

Protect the watch from severe vibrations or impacts, as this may affect the movement’s accuracy and stability. It is advisable to remove the watch during high-impact activities.

4. Frequently Asked Questions

4.1 What should I do if the watch stops?

First, check if the movement is out of power and try manual winding. If it still doesn’t work, consult a professional watch technician.

4.2 How do I adjust the time if it is not accurate?

Reset the time and ensure that you adjust it outside of restricted hours. Also, check if the watch has been affected by a strong magnetic field, which can impact accuracy.

4.3 My crown feels loose; what should I do?

If the crown is loose, it’s advisable to have it inspected and repaired to maintain the watch’s water resistance and overall integrity.

Conclusion

The Seagull ST1903 and ST1902 movements offer enthusiasts a blend of precision and style, making them a beloved choice in the world of horology. Whether for daily wear or as a collector’s piece, these movements provide a unique experience. We hope this user manual aids you in understanding and maintaining your Seagull watch. For further inquiries, please do not hesitate to consult a professional.