The Eterna 675 calibre stands as a testament to early 20th-century Swiss precision, captivating vintage watch enthusiasts and hobbyist watchmakers with its compact, reliable design. Produced from the 1930s onward, this manual-wind movement powered elegant ladies’ and rectangular watches, embodying Eterna’s commitment to finesse in smaller cases.
Historical Context
Introduced during Eterna’s golden era of innovation, the 675 calibre emerged when compact movements were prized for Art Deco-styled timepieces. It often appeared in stainless steel or gold-filled rectangular cases around 23mm wide, signed by private labels like SS&Co. or Peertone. Collectors value its survival in unrestored examples, highlighting robust construction amid the pre-automatic era.
Technical Specifications
Type: Manual wind, rectangular form
Jewels: 16 or 17, reducing friction in high-wear pivots
Diameter: Approximately 23mm (ideal for slim cases)
Height: Ultra-thin profile, around 2.5-3mm
Frequency: 18,000 vibrations per hour (vph) for smooth sweeping seconds
Power reserve: 36-42 hours on full wind
Shock protection: Basic Incabloc or equivalent system
Balance: Glucydur with Nivarox hairspring for stability
Functions: Hours, minutes, central seconds; no date or complications
For any Watch Spare Parts inquiry, Email us for rate and availability: [email protected]
Watch Parts Enquiry
* If you are unable to fill out any of the required information fields, please type “N/A”.
Stem, Crown, Hands & Spares might be available for this movement.
Email us for rate and availability: [email protected]
Mobile/WhatsApp: +91- 9841 360 340