This item was acquired from a wedding hall that closed last month. It seems it was in use until about two months ago. The microphone's foam is missing. Please use a cover if you are concerned. The ear pads and foam are deteriorated. I am not an expert, so I don't know how much this will affect monitoring. The cable also has kinks. Please let me know if you need additional photos. Thank you. ＜Features＞ ■ Single-ear headset ideal for live venues, broadcasting stations, studios, and theaters. ■ Boasts high sound isolation performance, shutting out sounds up to 20dB. ■ Equipped with a high-performance, noise-resistant microphone. ※ Cable not included. A separate cable is required. ＜Specifications＞ ◇ Headphones ■ Type: Dynamic, Closed-back ■ Frequency Response: 30～20,000 Hz ■ Impedance: 400Ω ■ Sensitivity: 94 dB ■ Distortion: Less than 1% ■ Maximum Input: 1000 mW/124 dB ■ Sound Isolation: Up to 20 dB ■ Side Pressure: Approximately 4.5 N ■ Weight: 283g (excluding cable) ◇ Microphone ■ Type: Dynamic ■ Frequency Response: 40～12,000 Hz ■ Polar Pattern: Hypercardioid ■ Impedance: 200Ω