Wireless headphones that provide 7.1ch digital sound. All accessories are included, but the optical digital cable may not be the original one. Please understand that there are no operational issues. The ear pads are damaged. The headband is flaking off when touched. The volume on the left side is low at low volumes, but this has been the case since it was new. The left and right volume balance is not a problem at normal listening levels. The box will be wrapped directly with bubble wrap for shipping. Please note that the outer box will be visible during delivery. - Brand: SONY - Model: MDR-DS7100 - Features: 7.1ch Digital Sound - Frequency Band: 2.4GHz Thank you for viewing.