ISE 2018: MTX Audio Exhibits iX3BT Bluetooth Headphone with SD Card Port February 12, 2018 | Home / February 12, 2018 rave-video / ISE 2018: MTX Audio Exhibits iX3BT Bluetooth Headphone with SD Card Port Look in: ISE ISE 2018: MTX Audio Exhibits iX3BT Bluetooth Headphone with SD Card Port