Second-generation self-developed 14.5 mm in-ear planar driver^^ 1m thin diaphragm ^^ Titanium + Aluminum dual-coating patented technology 28 nm-grade process technology ^^ 0.055 mm ultra-fine traces ^^ 14 N52 neodymium magnets on each unit Tesla valve patented bass enhancement acoustic technology ^^ Lightweight 6.5 g per unit ^^ Specially designed for comfort Rosewood/Black walnut versions available ^^ 4 strands totaling 392 wires of silver-plated copper cable ^^ 3.5 / 4.4 mm swappable plug