Eterna Sonic Electronic

Eterna Sonic Electronic 1550

The Eterna Sonic Electronic is a fascinating watch from the heyday of tuning fork watches. In the 1970s, many renowned watch brands experimented with electronic movements to achieve the highest precision and accuracy. The Eterna Sonic is an excellent example of this innovative era.

At the heart of the watch is the Eterna Caliber 1550, a modified ESA 9162 tuning fork movement known for its characteristic hum. This technology was originally developed by Bulova and later adopted by brands such as Omega, Longines and Eterna.

The classic design with a gold-plated case, simple line indices and silver sunray dial reflects the elegant style of the 1970s. The subtle date display and the striking red second hand add modern accents.

Brand: Eterna

Model: Sonic Electronic

Year: 1970s

Case: Gold-plated stainless steel, 37 mm

Dial: Silver with sunray finish, black line indices, red second hand

Movement: Eterna caliber 1550 (ESA 9162) – tuning fork movement

Strap: Black leather strap with contrast stitching

Special feature: Electronic tuning fork mechanism with characteristic humming

Condition: Very good vintage condition with slight signs of wear. The movement runs perfectly.