Abstract: A modularized wireless earphone includes an inner module, a power supply unit, a loudspeaker and an outer casing. The inner module is provided with a circuit module and an insulated casing. The circuit module includes a detection juncture used for detecting, an ANT sensor, a receiving microphone and a control switch. The detection juncture, the ANT sensor, the receiving microphone and the control switch are interconnected electrically. The insulated casing is used to enclose the circuit module and expose the detection juncture, the receiving microphone and the control switch outside an insulation body. The power supply unit is interconnected with the circuit module electrically to provide electricity, the loudspeaker is interconnected with the circuit module electrically, and the outer casing is used to enclose the inner module, the power supply unit and the loudspeaker.

Abstract: A multi-channel headphone has a housing, multiple independent sound channels formed in the housing, and at least one speaker unit mounted inside the housing. The at least one speaker unit produces sound directly passing through one of the sound channels and refracted through the rest of sound channels. As the refracted sound is slower than the directly travelling sound, multiple layers of auditory feeling can be provided and a stereo sound effect can be generated for users to enjoy better auditory feeling.

Abstract: A tunable multichannel headphone includes at least two main housings connected by a connection portion. Each of the main housings includes a speaker disk defining independent sound chambers, a driver unit disposed in the sound chambers, a front acoustic unit and a rear acoustic unit. The front and rear acoustic units are disposed on the opposite sides of the speaker disk. The front acoustic unit has a sound effect tuning unit which has field and channel switches and an audio output unit. The rear acoustic unit has first and second timbre switches. The switches are rotatable members arranged on the speaker disk for tuning different sound effects and tones. A method for assembling the tunable multichannel headphone is also disclosed.

Abstract: A multi-channel headphone has a housing, multiple independent sound channels formed in the housing, and at least one speaker unit mounted inside the housing. The at least one speaker unit produces sound directly passing through one of the sound channels and refracted through the rest of sound channels. As the refracted sound is slower than the directly travelling sound, multiple layers of auditory feeling can be provided and a stereo sound effect can be generated for users to enjoy better auditory feeling.

Abstract: A multi-directional key assembly is mounted on an electronic device to control the electronic device, and has a pressing module, a circuit board, and a housing. The pressing module has a flexible first panel, at least one dividing groove, multiple pressing portions, and multiple first contact elements. The at least one dividing groove divides the first contact elements from one another. Each pressing portion corresponds to and drives one of the first contact elements. The circuit board has multiple signal generators respectively corresponding to the first contact elements. The housing has multiple dividing protrusions protruding toward the first panel. The dividing grooves and the dividing protrusions divide the first panel into multiple sections. Thus, when one of the pressing portions is pressed, only one of the first contact elements moves. The other first contact elements do not move simultaneously.

Abstract: A packing box for headphones has a body. The body has an inner chamber, at least one opening, at least one lid and a window. The opening is defined through the body and communicates with the inner chamber. The lid covers the at least one opening. The window is defined through the body, communicates with the inner chamber and has at least one curved edge. The curved edge displays operational characteristics of the headphones. Potential buyers can quickly discern the operational characteristics of the headphones from the curved edge of the window. Therefore, the correct headphones for buyers' particular needs can be selected quickly and accurately.

Abstract: A packing box for headphones has a body. The body has an inner chamber, at least one opening, at least one lid and a window. The opening is defined through the body and communicates with the inner chamber. The lid covers the at least one opening. The window is defined through the body, communicates with the inner chamber and has at least one curved edge. The curved edge displays operational characteristics of the headphones. Potential buyers can quickly discern the operational characteristics of the headphones from the curved edge of the window. Therefore, the correct headphones for buyers' particular needs can be selected quickly and accurately.

Abstract: A wireless headphone with a self-actuated switch has a belt, two retainers and a self-actuated switch. The self-actuated switch has a base and a resilient bar. The base is mounted in a mounting recess in the belt and has a button. The resilient bar is mounted in the mounting recess in the belt and selectively presses against the button. Bending the belt will force the resilient bar to move forward to press the button. When the button is pressed, the wireless headphone will be actuated, and reverse.