Cc Bg 1920 1280
Landeron Caliber 4750

Landeron Caliber 4750

Manufacturer Landeron
Caliber Number 4750
Type Electric
Lignes 11.5”’
Vibrations Per Hour
18,000 bph
Anti-Shock Device
Functions Central hours; central minutes; central sweeping seconds
Country of Manufacture Switzerland
Known Models
Wittnauer Electro-Chron, Bucherer Electric, Enicar Electric, Nivada Grenchen Electric (Add your watch to the comments below…)

The Landeron caliber 4750 was the first Swiss made electric watch movement. This caliber was launched circa 1960 ~ 1961 and is found in a wide variety of vintage electric watches from the 1960s. There is a similar Landeron caliber 4751 with 13 jewels.

The original battery was numbered WD-4 or WD-5 and contained mercury. For that reason, the battery is no longer available. Some folks use smaller diameter modern batteries with an adapter ring. If you have experience with this, please share in the comments below.

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