Features: Use 3D Printing and Resin: Earphones adopt 3D printing technology, exact print inside structure, And the sealing film is processed by medical resin import from Germany, show the shine and sense of beauty. Titanium Alloy Composite: PU Composite Titanium Alloy ball topDynamic Driver, increase the rigidity of diaphragm, reduce distortion caused by unnecessary vibration, so as to achieve high fidelity sound quality. Improved Detachable Structure: Add Restrictions cavity which can protect the pin effectively, avoid break off,extend the interface plug times and service life. Ergonomic Shape for Comfortable Wearing:We understand wearing comfort is one of the biggest concert for most in-ear earphones, thus we have paid high attention to this to present you a comfortable, secure fit and noise isolation earphone while it also possesses astonishing industrial design and beauty. CVJ-Angel Wing could be the earphone on-the-go or something for professional scenario.