The Sellita SW-219-1 is a hand-winding mechanical watch movement with a small seconds complication at the 9 o'clock position and a date window at 3 o'clock. It is based on the ETA 2800 family of movements, but with a few key differences.
Here's a breakdown of the Sellita SW-219-1:
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Hand-winding: You'll need to manually wind the crown to power the watch.
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Small seconds: A subdial at 9 o'clock displays the seconds.
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Date complication: A window at 3 o'clock shows the date.
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26 jewels: Provides smooth operation and reduces wear on the movement's parts.
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Sellita vs. ETA: The SW-219-1 is designed similarly to the ETA 2801 movement, but with an additional jewel and some modifications to the winding system for improved shock resistance.
Overall, the Sellita SW-219-1 is a reliable and robust mechanical movement that's a common choice in many timepieces.