Abstract: A multifunctional protective case is configured for use with a hand-held electronic device and is assembled from a protective shell and a functional shell. The protective shell is normally fitted on the hand-held electronic device to protect the same against scratches and damages, and the functional shell is slidably and removably assembled to an outer side of the protective shell. The functional shell has a slide end portion for slidably connecting to the protective shell, and a fixing end portion for fixing to the hand-held electronic device or the protective shell. The functional shell is provided with an expansion structure that provides one or more functions. Functional shells with different expansion structures are exchangeable and can therefore be selectively assembled to the protective shell according to a user's actual need in use. Therefore, the protective case and the hand-held electronic device are more convenient and practical for use.

Abstract: An easy assembled and detached touch includes a pen body having a hollow portion, a touch end, a first opening, a second opening; the hollow portion having an oblong shape and penetrating through a front and a rear side thereof; the first opening and second opening is opened at an upper side of the pen body and is communicated to the hollow portion; the touch end having a conductive head; a sound guiding unit being a protrusion having a size approximately matched to that of the hollow portion; a sound path for guiding sound from one end to another end of the sound guiding unit; in assembly state; the sound path having one end coupled to an electronic device; and an inserting unit formed at the lateral side of the sound guiding unit which can be inserted into an insertion hole at a lateral side of the audio device.