【Perfect Sound Quality】: The earphone is suitable for most audio devices, making the output sound cleaner and more realistic, you can enjoy every sound detail. . 【Comfort and Stability】: The inear headphones are ergonomically designed that make you feel comfortable even when worn for long periods of time. They are generally more stable than Bluetooth headsets. . 【Durable Material】: Headset with 3.9ft antiwrap oxygenfree copper cable, perfect for longterm use, the flexibility of the cable allows you to easily walk through backpack and clothing while moving outside. . 【Convenient Functions】: The three convenient function keys that make it easier to adjust the volume +/, switch songs and answer / hang up calls. ..