A portable cellular phone comprising a case body and a sliding cover is
disclosed. The case body includes an operating section and stopper
portions. The sliding cover covers the operating section of said case body
and is slidably supported on said case body. The stopper portions of the
case body restrict a sliding range of said sliding cover. The sliding
cover is mounted and detached with respect to said case body by applying
an outer force to the sliding cover in a direction perpendicular to a
sliding direction when the sliding cover is positioned at a specific
position within the sliding range. When the sliding cover is mounted, one
of locking portions of the sliding cover is engaged with one of locking
portions of the case body, and the other locking portion of the sliding
cover is aligned in position on the other locking portion of the case
body. The sliding cover is fit to the case body by applying an outer
force.