1. An elastic wave device comprising:a support substrate;
a lamination layer film provided on the support substrate and including a plurality of films including a piezoelectric thin film;
an interdigital transducer (IDT) electrode provided on one surface of the piezoelectric thin film;
a first insulation layer provided in a region located at an outer side portion of a region where the IDT electrode is provided and extending from at least a portion of a region where the lamination layer film is not present to an upper portion of the piezoelectric thin film in a plan view; and
a wiring electrode electrically connected to the IDT electrode, extending from the upper portion of the piezoelectric thin film to an upper portion of the first insulation layer, and extending onto a section of the first insulation layer positioned in the region where the lamination layer film is not present; wherein
a width of the wiring electrode is no less than about 6 ?m.