The ATH - M50x Bluetooth Headset Adapter is specially designed to keep your headphones wireless. They adapt to the shape of your headphones and get rid of the cables. The QC3005 Bluetooth chip with the latest 5.0 protocol and TPA6132A2 amplifier delivers high-quality audio up to 10m. The adapter supports SBC, AAC, aptX, aptX LL audio codecs and is lightweight and compact. It also features a built-in cVc for noise reduction and 130mAh battery and an 8-hour battery life, a color battery indicator and three control buttons. Color: Black