Take Sound Reality on the go. The ATH-CKR35BT in-ear headphones feature Bluetooth® wireless technology along with an in-line mic and controls, allowing you to answer calls, adjust volume and handle playback of music and videos on compatible smartphones and other devices. And with the headphones’ high-performance 9.8 mm drivers and vibration-absorbing brass stabilizers you’re assured true-to-life audio with remarkably clear mid and high frequencies.