Movement

Calibre 341

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1961

Lignes 12

Mounting Diameter 27

Thickness 4.85

Frequency (vph) 19,800

Jewels 17

Power Reserve 43

Hand Sizes 1.60, 1.00, 0.20

Complication Center Seconds, Date

Power Automatic

Shape Round

Size Large

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Technical Diagram

Notes

The 341 is the date version of the 340, and Longines first thin automatic date wristwatch calibre. For more information on its development, see the entry about the 340.
340, 342: center second
341, 343, 345: center second, date
350, 352: sub second
351, 353, 355: sub second, date