PURPOSE: To obtain the watch having extremely high accuracy, by correcting the frequency versus temperature characteristics of X cut crystal oscillator, by using the ceramic capacitors two or more, different in Curie point.

CONSTITUTION: Mol ratio of BaTiO3 and SrTiO3 adjusted, the ceramic capacitor 9 having Curie point of 24°C and the ceramic capacitor 10 having the Curie point of 15°C are fixed, for example, with the solder 11, and this composite capacitor is used as the temperature compensation capacitor of the oscillation circuit using the X-cut crystal oscillator having the frequency versus temperature characteristics of negative secondary temperature coefficient. Thus, the asymmetricality of the capacitance versus temperature characteristics of the temperature compensation capacitor is corrected to obtain the watch extremely high in the accuracy.