Hummingbird: A Citizen Tuning Fork Hisonic 3711A from January 1973
Arguably, the two most important innovations in watchmaking are the mechanical lever escapement and the quartz oscillator. The second of …
Tag Archives: Electronic watch
The world’s first transistorised electronic balance movement: The Citizen Cosmotron X8
The heart of every mechanical watch movement is the balance, whose role is to control the release of power from …
The Seiko EL-370 electronic watch
The electronic balance-driven movement: horological cul-de-sac or brilliant piece of lateral thinking? I am inclined to think a bit of …
Adventures in Amateur Watch Fettling 