Longines 27M-401, Winding stem, DCN 2121

• 
  DCN winding stem for Longines cal: 27M

• 
  Thread: 90

• 
  Fits cal: 27M, 27MS

Data: Longines 27M

• 
  17 jewels, manual winding, sub second.
• 
  Size: 12''' 27,0 mm.
• 
  H: = 3.2 mm.
• 
  N: = 18.000 A/h.
• 
  Power reserve: 40 h.

Versions:

• 
  27M: sub second, flat hairspring, H=3,20 mm.
• 
  27MS: sweep second, flat hairspring, H=4,30 mm.
• 
  27M: shock resist, sub second, flat hairspring.
• 
  27MS: shock resist, sweep seccond, flat hairspring.