solarcel, ontvanger, luidspreker, batterijen, kabel, schakelaar (binnenzijde) / Polystyrol Styrofoam,plamuur, vernis, metaal, rubber (buitenzijde)
http://mediabank.vanabbemuseum.nl/website/Artworks/R_2674_03 - lunaphon.jpg
solarcell, receiver, speaker, batteries, cable, switch (inside) / Polystyrol Styrofoam, filler, varnish, metal, rubber (outside)