A surface acoustic wave device includes first and second surface acoustic wave resonator filters connected in parallel to each other. The first double-mode surface acoustic wave resonator filter has resonance frequencies f1 L and f1 H and the second double-mode surface acoustic wave resonator filter has resonance frequencies f2L and f2H, where f1H=f2L. A Q factor of a resonance mode of one of thefirst and the second double-mode surface acoustic wave resonator filter is less than that of the other surface acoustic wave resonator filter, or an energy transmittance of the reflectors in at leastone of the first and the second surface acoustic wave resonator filters ranges from about 12% to about 28%.