The TaoTronics TT-BH065 Boost aptX HD BT5.0 IPX4 In-Ear Headphones produce high quality and clear audio with Qualcomm aptX HD Audio Bluetooth technology. They are designed with 10mm special fiber dynamic drivers to deliver a great listening experience. Calls with these headphones are crystal clear with its Qualcomm cVc 8.0 microphone.The in-ears utilise Bluetooth 5.0 to ensure a stable connection with longer range. They have a playtime of up to 15 hours on a full charge. Its earpieces are designed with magnetic back panels to clip together when around your neck.