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Japan’s first battery-powered alarm clock based on a transistor clock. Magnetic forces drive the balance and a spring is used for the alarm bell. Under normal-use conditions, the watch can run for one to two weeks without winding the spring.

Name Hi-Alarm
Time/Period 1964
Additional information The battery life is 500 days. The alarm bell rings for at least two minutes. Equipped with a push mechanism to stop the ringing.