Longines 12.68Z-722, Balance with Breguet hairspring

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  New replacement balance for Longines 12.68Z with Breguet hairspring. Manufacturer: Renata

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  Fits cal: 12.68Z, 12.68N, 27.0, 12.68Z stop (for shock-resist and Incabloc).

Data: Longines 12.68Z

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  17 jewels, manual winding.
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  Size: 12''' 27,0 mm.
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  H: = 4,25 mm.
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  N: = 18000.
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  Power reserve: 40 h.

Versions:

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  12.68Z: sub second, H=4,25 mm.
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  12.68N: sweep second, H=5,45 mm.
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  12.68Z: Quantieme, calendar, sub second, H=5,10 mm.
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  12.68Z: Stopseconde, "chronograph", H=6,10 mm.

Each version with flat or Breguet hairspring, no shock protection, shock resist or incabloc.