The bluetooth headphone adapter for ATH-MSR7 is specially designed to keep your headphones wireless. It adapts to the shape of your headphones and frees you from cables. Thanks to the QC3005 Bluetooth chip with the latest 5.0 protocol and the TPA6132A2 amplifier, you can enjoy high-quality sound up to a distance of 10 m. The adapter supports SBC, AAC, aptX, aptX LL audio codecs and is light and compact. It also has a built-in microphone with CVC function to suppress noise, a battery with a power of 130mAh and lasts 8 hours, a color battery status indicator and three control buttons.