ETA 2700 Series

Manufacturer	ETA
Caliber Family	2700
Movement Type	Automatic
Lignes	11.5”’
Power Reserve	~40 hours
Vibrations Per Hour	28,800 – 36,000 bph
Lift Angle	Needs confirmed
Shock Protection	Incabloc
Country of Manufacture	Switzerland, Swiss made
Known Models	(Add your watch in the comments below…)

The ETA 2700 family of movements was produced in the 1960s-1970s. The calibers from the 2700 series are considered to be predecessors to the ubiquitous ETA caliber 2824-2 framework that most watch enthusiasts are familiar with today.

Calibers in the ETA 2700 series:

• ETA 2722 – Automatic, 11.5”’, 28,800 bph, time-only (no date)
• ETA 2724 – Automatic, 11.5”’, 28,800 bph, quickset date
• ETA 2728 – Automatic, 11.5”’, 28,800 bph, quickset day/date
• ETA 2732 – Automatic, 11.5”’, 36,000 bph, time-only (no date)
• ETA 2734 – Automatic, 11.5”’, 36,000 bph, quickset date
• ETA 2738 – Automatic, 11.5”’, 36,000 bph, quickset day/date

ETA 27XX Similarities and Differences:

All of the 2700 movements are automatics with a diameter of 11.5 lignes. The differences between calibers is mainly the beat rate (28,800 vs 36,000 bph) and the calendar complication (no-date, date, day date). All of the date or day/date versions are quickset.

Similar Families:

The ETA 2700 family of movements is similar to the 2500 and 2600 series which were produced with lower beat rates.

Additional Resources:

• More ETA movements