PROBLEM TO BE SOLVED: To provide an electromechanical timepiece which suppresses unnecessary movement of a rotor when an impact is generated without consuming a large amount of electric energy. An electromechanical motor 4 is formed by two coils B1 and B2 through which a magnetic circuit 10 of a stator penetrates, and a first coil B1 is connected to voltage detection circuits CD1 and CD2, and voltage detection circuits CD1 and CD1. The rotor 18 is capable of detecting the voltage induced in the first coil B1 during the time intervals between the drive pulses, especially during these time intervals, so that the CD2 can detect the voltage induced in the first coil B1 in the stepping function mode of the motor. The switches T1, T2, T3 are configured to short-circuit the second coil B2 during each of the time intervals so that it is possible to detect whether an unwanted step is performed by. , Controlled by the electronic control circuit CEC, which passively holds the rotor 18 in an idle position where the rotor 18 is temporarily located between drive pulses. [Selection diagram] Fig. 1
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