High-Fidelity Stereo Sound Precision Bass Hands-free Music and Calls Noise Isolating Fit Comfortable All Day Wear Tangle-Free Flat Cable Drivers: 10mm Neodymium Multifunction Button: Call Answer/End Frequency: 20Hz-20kHz Sensitivity: 10 4dB ± 3dB Jack Type: 3.5mm Impedance: 32ohm ± 15% Cord Length: 3.9ft/1.2m