Intelligent control button can work compatibly and smoothly both in iOS and Android smartphones. Co-design with Swarovski Crystal element shows the fashion and luxury jewelry. Hi-fi beryllium diaphragm speaker provides pure and thick sound. Elegant jewelry box and high-rigidity silicone cord winder design offers safety protection and easy arrangement experience. Special Bling Bling cord made by aluminum-foil braided with translucent skin offers better ductility and more fashionable design. Piston-type metal chamber is formed from once diamond cutting. The separation of left, right and microphone grounding design avoids the signal crosstalk.