Hear the difference with massive 70 mm HD drivers, enjoy full range sound up to 120Khz frequency response, hear music at its best with Hi-Res Audio compatibility. Connectivity Technology: Wired Keep sound Stable with a resonance-free, all-metal Housing, smooth sound at all frequencies with a Fibonacci-patterned grill, ergonomic Ear pad design Beta titanium headband, genuine leather headband, separated ground cable, silver-coated OFC, made in Japan Connectivity technology: Wired