I bought these headphones based on the many good review. Unfortunately, I'm just disappointed with the goods, and even more by the seller Hifi-Tower. The headphones have poor sound quality, are not odorless. Poor Bluetooth function when removed from the player only Störungen..Ich have headphones sent back with a request for reimbursement. Then, the seller sent me back an empty box, and has denied the reimbursement until I make Affidavit and and and. Thanks to the expert work of Amazon, they (Amazon) have refunded me the purchase price. Amazon always happy, but never again with this seller! Thanks At this point, Amazon Team!