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Headphone definition: Headphone is a type of earphone worn on the head. It is composed of two parts, a signal transmitter and a headset with signal receiving and amplifying devices (usually moving coil). The transmitter is connected to the signal source, and you can also connect a preamp or headphone amplifier before the transmitter to improve the sound quality and adjust the tone. Product Parameter: Type Wired headset Model JTY-751 wearing method Head-mounted Headphone material Plastic ABS microphone yes gear Headphones stretched and adjusted Plug material 3.5mm metal double pin plug Plug Type In-line impedance 32Ω cable material PVC Cable length 1.8m Speaker diameter φ40mm Sound principle Moving coil Sensitivity 1 00±3dB Audio response range 20- 20KHz Distortion 1％ Earmuff material PU cotton color Silver black weight 169g application Support 3.5mm interface playback device to call and listen...