A surface acoustic wave device includes multiple SAW resonators formed on a piezoelectric substrate and connected in a ladder arrangement, the piezoelectric substrate having a polarization inverted region on which either a series-arm resonator or a parallel-arm resonator is formed. A timewise characteristic or a characteristic relating to a reproducing state of the content material andor the content information corresponding to operation candidate contents are determined. The fixing bolt has a clamping rod and a fastening plate, which juts out a fastening post.