ETA Caliber 2688
ETA Caliber 2688

ETA Caliber 2688

ManufacturerETA
Caliber Number2688
Base Caliber
ETA 2681
Movement TypeAutomatic, self-winding mechanical
Lignes8.75”’
Diameter
19.4mm
Height
5.35mm
Jewel Count
17
Beat Rate
21,600 vph, 3 Hz
Lift Angle
51 degrees
Power Reserve
38 hours
Rotor Style
Ball-bearing
Hand-Windable?
Yes
Anti-Shock Device
Incabloc
Regulator
Etachron with micro-adjuster
Hand Count3
Hand Sizes
1.2mm / .70mm / .20mm
FunctionsCentral hours; central minutes; central seconds; day/date at 3:00
Hacking Seconds?
Yes
Country of ManufactureSwitzerland, Swiss made
Known Models
(Add your watch to the comments below…)

ETA caliber 2688 is a smaller ladies size automatic watch movement with a day/date complication. This caliber is part of ETA’s 2600 family of movements and was categorized as a Mecaline movement when it was produced. Official technical documentation was found dated as far back as 2005, with updates as recent as 2010.

ETA 2688 Tech Sheets (pdf):

Additional Resources:

Seagull Caliber St19

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