$125 or best offer Great headphones $160 new they simply just don’t fit my big head. These headphones are pretty awesome they work great with my Marantz receiver which is wireless and Bluetooth. I was able to establish connection to my receiver as well as my phone and to my streaming device all at once. See product information below. I will Include a get started packet describing function and button sources with the product upon purchase. Description Product highlights: closed-back, on-ear design helps keep out external noise Bluetooth 4.0 connectivity for wireless music listening and phone calls with compatible smartphones aptX™ and AAC decoding provides high-quality music streaming from compatible devices lightweight and portable 40mm dynamic drivers deliver Klipsch's signature "front-row" sound clear highs and strong, accurate bass built-in rechargeable battery offers up to 20 hours of wireless use (USB charging cable included) earcup controls for calls and music built-in microphone for clear phone conversations 48" miniplug cable included for wired listening folding design for easy storage memory foam earpads and padded headband for comfort includes soft travel case frequency response: 20-20,000 Hz sensitivity: 110 dB impedance: 32 ohms weight: 8.2 ounces