Patent ID: 7075859

Claim:
A radio-controlled timepiece having a reception means for receiving a standard time signal containing time data, a timekeeping means for keeping time based on a reference signal from a reference signal source, a time display means having hands and indicating the time by means of the hands, a drive means for moving the hands according to the time, and an external operating member enabling changing the time display means by means of a first specific input operation, said timepiece being effective for adjusting its time based on time data received by the reception means, said radio-controlled timepiece comprising: an operation detection means for detecting a second specific input operation of the external operating member; a controller for resetting only the seconds value of the time kept by the timekeeping means to a specific value and starting timekeeping by the timekeeping means in response to the operation detection means detecting the second specific input operation; and a time-adjustment means for adjusting the time indicated by the time display means based on a time difference between the seconds value of received time data and the seconds value of the timekeeping means when time data is first received after the second specific input operation.