Difference between revisions of "Bidynator"
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==Bydantor== | ==Bydantor== | ||
| − | Bidynator was a brand name for a series of automatic watch movements produced by Felsa from 1942 through the 1960's. It was the first successful movement with bi-directional winding. | + | Bidynator was a brand name for a series of automatic watch movements produced by Felsa from 1942 through the 1960's. It was the first successful movement with bi-directional winding. |
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| + | Felsa introduced their first automatic movement with bi-directional winding in 1942. Cal. 410, and the associated ladies model, Cal. 380, were revolutionary but World War II interrupted production and development. Cal. 410 was only produced for a short while before the more-refined Cal. 690 was introduced in 1947 to replace it. These movements were very similar, with many interchangeable parts, but the new series had a longer power reserve (43 rather than 32 hours) and were produced in much greater volume. | ||
==Links== | ==Links== | ||
Revision as of 23:21, 16 April 2020
Bydantor
Bidynator was a brand name for a series of automatic watch movements produced by Felsa from 1942 through the 1960's. It was the first successful movement with bi-directional winding.
Felsa introduced their first automatic movement with bi-directional winding in 1942. Cal. 410, and the associated ladies model, Cal. 380, were revolutionary but World War II interrupted production and development. Cal. 410 was only produced for a short while before the more-refined Cal. 690 was introduced in 1947 to replace it. These movements were very similar, with many interchangeable parts, but the new series had a longer power reserve (43 rather than 32 hours) and were produced in much greater volume.
