The FHF 676 is a manual-winding mechanical movement developed by Fabrique d’Horlogerie de Fontainemelon (FHF), one of Switzerland’s oldest and most prolific producers of ébauche (blank) movements. Introduced as part of a family of compact calibers, the FHF 676 was designed primarily for ladies’ watches and slim dress models, focusing on simplicity, reliability, and a thin profile.

Technical Specifications

• Winding type: Manual

• Size: 6¾ x 8 ligne (approx. 15.3 mm x 18.1 mm)

• Height: ~3.0 mm

• Jewels: 17

• Frequency: 21,600 vibrations per hour (vph)

• Power reserve: Approx. 42 hours

• Functions: Hours and minutes (two-hand configuration)

The FHF 676 is a time-only movement, chosen for its compact architecture and ease of integration into small cases.

Design Characteristics

The FHF 676 was engineered for mass production and use in high-volume watches during the mid-20th century. Despite its small size, it delivers reliable mechanical performance and is built using robust components that emphasize longevity.

Key features include:

• Two-bridge architecture with a minimalist layout

• Swiss lever escapement

• Optional shock protection (Incabloc or similar in most later versions)

• Smooth winding and efficient energy transmission via a simple gear train

The overall design is focused on ease of servicing, making it popular among watchmakers.

Applications in Watchmaking

The FHF 676 was widely adopted in:

• Ladies’ gold, gold-plated, and steel watches

• Slim unisex models with minimalist designs

• Private-label and export models aimed at fashion-conscious buyers

• Brands requiring dependable, space-efficient movements for classic case shapes

It was often used in rectangular, tonneau, or oval cases, where its dimensions allowed for a seamless fit without adding thickness.

Watchmaker's Perspective

The FHF 676 is praised for:

• Reliable performance over decades

• Ease of disassembly and repair

• Strong parts availability and compatibility with other FHF 676-family calibers

• Clean and straightforward mechanics, ideal for vintage restoration projects

Its ruggedness and mechanical efficiency make it a solid choice in the realm of small Swiss movements.

Legacy and Conclusion

The FHF 676 is a representative example of FHF’s ability to combine compact design with lasting durability. It played an essential role in powering countless mid-century wristwatches, particularly those built for elegance and discretion. Even today, it is respected by collectors and watchmakers as a reliable workhorse, and many vintage timepieces using this caliber are still ticking smoothly—proof of its thoughtful, well-balanced design.