Abstract: Disclosed herein is a portable terminal device including an antenna, a casing, and an operation unit. The casing at least part of which is formed from a metallic material is disposed so that the antenna is exposed. The operation unit is formed from a resin material and mounted to the casing so as to cover the exposed antenna.

Abstract: Provided is an electronic apparatus including a casing, a first jog dial, and a pressing operation detection unit. The casing includes a first surface and a second surface. The first jog dial is exposed from the first surface and the second surface, is capable of rotating around a first axis substantially parallel to the first surface and the second surface as a center, and is capable of being pressed from a first direction substantially perpendicular to the first surface and a second direction substantially perpendicular to the second surface. The pressing operation detection unit detects a first pressing operation from the first direction and a second pressing operation from the second direction.