Description: Model Number: M301 Style:In-Ear Connectors:3.5mm Jack: 3.5mm Size of driver: 10mm Impedance: 32!#!amp!*!Omega; Sensitivity: 106 dB Max.Input Power: 19mW Frequency Response: 13Hz-22.5KHZ Cable: 1.2M Plug: 3.5mm， silver plated size of driver: 10mm Speaker: 6U， 32!#!amp!*!Omega; Package Include: 1 X M301 3.5mm In-Ear Earphone with Mic More Details: