The NuForce NE-600M Earphones unique, high-efficiency design delivers excellent bass, a harmonically correct tonality, a deeply layered soundstage and superb acoustic isolation, The NE-600M Earphones include a hands-free microphone with button for call answering and music playback control, Advanced-technology extra large drivers, Self-untangling flat OFC wire, Driver Size: 11mm, Impedance: 32 Ohm, Frequency Response: 20 to 20kHz, Max, Input Power: 3mW, Sensitivity: 100dB+-3dB, Directivity: Omni Directional, Connector: 3, 5mm 4-pin iPhone compatible-plug, Length: 110 cm 43, 3 inches, Microphone Sensitivity:-42dB, Included Accessories: S, L spare tips, Color: Lime, SKU: NFCE005