Sea-Gull ST1701 Sub-Dial Automatic Movement

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The Sea-Gull ST1701 is a round automatic winding movement built for watch assembly, with a maximum diameter of approximately 1.02 in and an assembly diameter of approximately 1.01 in. Its slim profile of about 0.18 in thickness leaves room inside a case for the sub-dial layout it is designed around.

Inside, 20 jewels support the gear train at a frequency of 21600 beats per hour, and the mainspring holds a power reserve of 36 hours once fully wound. The movement is supplied in a carton box.

Key Features

Brand Sea-Gull
Model Number ST1701
Item Type Movement
Winding Mode Automatic Winding
Shape Round
Features Sub-Dial
Thickness Approx. 0.18 in
Maximum Diameter Approx. 1.02 in
Assembly Diameter Approx. 1.01 in
Number of Jewels 20
Frequency 21600
Reserve Hours 36
Packing Box Carton
Country of Origin Mainland China

Highlights

  • Automatic winding movement with a sub-dial
  • 20 jewels and a frequency of 21600
  • 36-hour power reserve
  • Round shape with a slim profile of about 0.18 in

Compatibility

With a maximum diameter of approximately 1.02 in and an assembly diameter of approximately 1.01 in, the ST1701 fits cases built to that opening size. Its thickness of about 0.18 in sets the minimum internal clearance needed.

Frequently asked questions

What winding mode does the ST1701 use?

It is an automatic winding movement, so it winds itself from the motion of the wearer's wrist.

How many jewels does the movement have?

The ST1701 contains 20 jewels.

What is the frequency of the movement?

It runs at a frequency of 21600.

How is the movement packaged?

It is supplied in a carton box.