This is a limited edition Rhythm Beige color KOSS Porta Pro, a popular model. It has been modified from a wired model to wireless Bluetooth, and upgraded with premium ear pads. The ear pads have some minor staining, but overall it has been used sparingly, with less than 10 uses when going out. The sound quality and functionality are excellent and work without any problems. 【Product Details】 Brand: KOSS Model: Porta Pro Limited Edition Rhythm Beige Modifications: Bluetooth wireless conversion, premium ear pad replacement Condition: Used (lightly used) Accessories: Body only In addition to the rare limited color, this is a special edition that has been modified for ease of use. If you are looking for one, please consider it.