ETA 1301-401, Winding stem

• ETA original part, not in factory packaging.

• Thread: 0.90 mm.
  

• Fits cal: 1301, 1302, 1311, 1312, 1318, 2325, 2330, 2335

Technical data ETA cal: 1301

• 17/20 jewels, manual wind, sweep seconds.
• S: = 8.75''' 19.4 mm.
• H: = 4.25 mm.
• N: = 18.000 A/h.
• Power reserve: 40 h.
• Mainspring: 1,35 x 7,5 - 0,085 - 240

Versions using this winding stem:

• 1301/1302: 8.75''' manual wind, sweep second.
• 1306/1316: 9.75''' automatic wind, sweep second.
• 1307/1317: 10.5''' automatic wind, sweep second.
• 1308/1318: 8.75''' automatic wind, sweep second.
• 1309/1315: 9.25''' automatic wind, sweep second.
• 1310/1320: 9.25''' automatic wind, sweep second.
• 1322: 8.75''' automatic wind, sweep second.
• 2325/2330: 8.75''' manual wind, sub second.
• 2335: 8.75''' manual wind, sub second, different bridge design.