Product details of Keeka WE-227 Wired In Ear Immersive Music Earphone Headset with Microphone and Volume Control High-fidelity headset s Simple and fashionable Comfortable to wear Not easy to fall off Voice control design, for easier listening to music and answering calls The wire is design with slip-buckle anti-winding style, which brings you a pleasant experience The earphone adopts 10mm moving coil unit, with good bass diving ability and natural sound quality Cable Length: 1.2 meter Impedance: 16 ohms Frequency Response: 20-20KHz Sensitivity: 107-3Db Plug Type: 3.5mm plug Drive Unit: 14mm Rating Power: 5v Maximum Output power: 50Mw MIC Sensitivity:-43dB