Thank you for viewing. This is the SONY MDR-NC750. Wired earphones equipped with 9mm drivers supporting high-resolution audio. - Model Name: MDR-NC750 - High-Resolution Audio: Hi-Res Audio - Driver Size: 9mm - Impedance: 16Ω - Sensitivity: 98dB/mW - Cable Length: 1.2m - Connector Type: 3.5mm After purchase, it has been stored unopened in a dark place. Instant purchase OK. Although the contents are unopened, there may be initial scratches due to the nature of the product. Also, please refrain from purchasing if you are looking for perfection or are nervous, as it is only stored by a private individual. Returns and cancellations after purchase are not accepted. Please note that we are not responsible for accidents during shipping. Please purchase after understanding the above. #Sony #SONY #Hi-Res Compatible #Earphones