After 60+ years of making legendary loudspeakers, we built upon our bold audio heritage to revolutionize the headphone industry. Since 2007 we have been creating the most innovative earbuds on the market. We are the performance and comfort winners. Period. Frequency Response: 10Hz-19kHz Sensitivity: 110dB Impedance: 18 ohms Driver Design: Dual Magnet, Dynamic Moving Coil Micro Speaker Noise Isolation: -22 Input Connections: 3.5 mm Driver Diameter: 6.5 mm