This item is used, but has only been used a few times. I don't have any use for it, so I hope someone else can use it. The original box is not included. The specifications are as follows: [Specifications] ・Headphone Type 　Over-ear ・Microphone 　Input Sensitivity: -17dBV/Pa +/- 4dB 　Frequency Response: 100Hz～10kHz 　Noise Canceling: Yes ・Speaker 　Driver Size: 30mm 　Frequency Response: 20～20kHz 　Stereo: Yes Other Features: Rotating microphone boom, in-line controls (volume & mute switch), leatherette ear cushions