Omega 1250-9031, Transistor unit

• New Omega original part in factory packaging.

• Fits Omega cal: 1250, 1255, 1260
• Fits ESA cal: 9162, 9164

Technical data Omega 1250 (ESA 9162).

• 12 Jewels, electronically controlled tuning fork, sweep second, quickset date.
• S: = 13''' 29.0 mm.
• H: = 4.85 mm.
• N: = 300 Hz.
• Battery: original (mercury) 343, replacement: 344 (silver oxide).

Versions:

• 1250: date.
• 1255: chronograph, day, date.
• 1260: day, date.

How to check the transistor units coils, last picture.

The resistance between contacts:

3 and 4: 7 K Ohm.

1 and 2: 1,5 K Ohm.

Versions:

• 9162: date.
• 9164: day, date.