NOVELTY - The face (10) has substrates provided primarily from polycarbonate, and a bond layer bonding the substrates. The layer is configured from a sheet-form adhesive elastic body composition obtained by directing UV light on UV cross-linking acrylic resin material in an oxygen-blocked state such that cross-linking occurs, where the resin material includes an acrylic acid monomer or oligomer e.g. butyl acrylate, as a main agent. The layer has thickness of 50 to 200 micrometer, elongation of 50 percentage to 350 percentage and light transmittance of 90 percentage or higher in the thickness direction.    USE - Face for use in a timepiece (claimed) e.g. portable wristwatch such as solar radio timepiece. Can also be used in a table timepiece and a wall timepiece.    ADVANTAGE - The substrates are configured primarily from polycarbonate, so that better bonding strength can be achieved between the substrates even the face including three or more substrates, thus effectively preventing formation of air bubbles in the bond layer. The light transmittance of the bond layer in the thickness direction can be 90 percentage or higher, so that the optical transparency of the timepiece face as a whole can be improved, and the timepiece face can be applied to a solar timepiece in a better manner. The layer has thickness of 50 to 200 micrometer, thus improving the mechanical strength of the timepiece face. The face improves the handleability of the substrates during manufacturing of the face, thus improving the productivity of the face. The substrates can enhance decorative quality and three-dimensional effect. The thickness of the extruded UV-cross-linking acrylic resin material can be adjusted using an extrusion die of the extruder from the viewpoint of preventing occurrence of air bubbles and preventing adhesion or entrainment of foreign objects. The face allows a sufficient amount of light to be incident on a solar cell of the timepiece.    DESCRIPTION OF DRAWING(S) - The drawing shows a partial cross-sectional view of a portable timepiece.    Timepiece face (10)    Case (82)    Back lid (83)    Stem pipe (86)    Winder (87)    Portable wristwatch (100)