The House of Marley EM-JE001-LI Smile Jamaica - Jammin' In-Ear Headphone with 1-Button Mic - Lily Frequency response: 20Hz - 20kHz Sensitivity: 98dB @1kHz Nominal Impedance: 16 ohms @ 1kHz Drive Component: 8mm Moving Coil Input Connection: 3.5mm Stereo