1. One-sided and plating coating design.
2. Built-in microphone, support answer / hang up calls & one to two connection.
3. Good music, clear talk sound.
4. Ideal for most smartphones (such as: iPhone, Samsung, HTC, Sony, LG, Nokia, Xiaomi, Huawei, Lenovo, Motorola, Meizu, BlackBerry etc.).
5. Exquisite craftsmanship and fashion appearance.