Longines 645.1-401, Winding stem

• LONGINES original winding stem, not in factory packaging.
  

• Thread: 0.90 mm.

• Fits cal: 645.1
  

Technical data LONGINES 645.1 (ETA 2890)

• 21 jewels, automatic wind, sweep second, date.
• S: = 12.5'''   28.00 mm.
• H: = 3.60 mm.
• N: = 28.800 A/h.
• Power reserve: 42 h.