Bluedio TN2 Sports Bluetooth Earphone with Active Noise Cancelling Wireless Headset for Phones - BlueKey Features:Featherweight design, high definition sound.Comfortable, stick to ears, won`t drop out.Magnetic storage, comvenient and easy to settle, without interwine.Headphone cables from its middle pair, accords ergonomics, more stable, more free.13MM large drive unitPurchase PU+PET composite mat..