Monster beats by dr dre STUDIO noise cancelling headphones, inventory #I-12575. High Definition powered isolation headphones, takes 2 AA batteries, which takes less power from mp3 player, so mp3 player charge lasts longer. Comes with 2 cords and large stereo adapter. Headphones are in very nice condition. Price of $156 includes all taxes. PLEASE REFER TO INVENTORY #I-12575 WHEN INQUIRING. We also have more items for sale at The Bay Street Broker located on the corner of Bay and Government St. open till 6:00 pm everyday, 250-383-SHOP