Digital noise-canceling functionnHigh-quality high-resolutionnCosed dynamic typenDriver unit: 9mmnMaximum input: 100mW (IEC)nFor Walkman / Digital noise-canceling function / High-quality high-resolution /Walkman dedicated 5 terminal / Cosed dynamic type / Driver unit: 9mm / Maximum input: 100mW (IEC) / Sound pressure sensitivity: 103dB/mW / Reproduction frequency band: 5Hz-40,000Hz / Code: about 110cm / Weight: about 15g /Accessories: earpiece S.L