Qualcomm aptX HD and LDAC compatible Bluetooth dongle High-quality Bluetooth transmitter compatible with iPhone etc. - Brand: Questyle - Model: QCC Dongle Pro - Bluetooth Version: Bluetooth 5.4 - Supported Codecs: aptX, aptX HD, LDAC - Design: Snapdragon Sound Thank you for viewing. Purchased in September 2025 and listened to it about 5 times. Although each time was short, I understood the sound characteristics, so I am selling it to organize my belongings. All accessories are included. There seem to be various connection methods introduced on YouTube. For your reference, although it didn't happen in my case, according to YouTube, some earphones may have connection quirks. Thank you.