Type: Earbud Driver Unit: 8.5mm Frequency Response: 8Hz-23KHz Input Impedance: 16 ohms Sensitivity: 102 dB/mW Cord Length: 3.94 ft. (1.2m) Weight: 0.11 oz. (without cord) Features: Comfortable and secure fit inner ear headphones with softer memory foam earpieces and just-fit body Better isolation from background sound with two sizes of memory foam earpieces Powerful 0.33" (8.5mm) Neodymium driver unit Gold-plated iPhone-compatible slim plug