Details Audio-Technica ATH-DSR7BT are mid range Wireless Over-Ear Headphone designed for professional use by audio and sound masters. This DSR series gadget is ideal for music lovers and sound engineers working with music mixing or studio edits. The headphones are wireless and provide both NFC and Bluetooth support for easy pairing with any smart device with Bluetooth/NFC enabled. It features wide 45mm True Motion drivers. They also feature carefully crafted ear cups that are not only extremely comfortable to wear, but also provide perfect isolation from outside interference so you can really focus on the music. Other notable specs of the Audio-Technica ATH-DSR7BT Wireless Over-Ear Headphone are: memory foam ear pads and headband, support for aptX HD/AAC/SBC codecs, LED indicator for showing pairing status and battery life, Bluetooth v4.2, Pure Digital Drive system, 5Hz-40KHz super wide frequency response range, 100dB sensitivity, 35 ohms impedance, omni-directional mic, microUSB Type-B interface, 2 meters USB charging cable, carry pouch and a 3.7V Li-Po rechargeable battery with up to 15h usage.