Product Parameter:Brand Name: KZModel Number: ED9Sound principle: Moving coilStyle: In-Ear Connectors: 3.5mmRated Power: 2mwFrequency Range: 7-46200hzUnit impedance: 16 ohmSensitivity: 106 dBSpeaker diameter: 6.8 mmCable length: 1.2 M(��3CM)Function: Noise CancellingStyle Positioning: symphony， rock， European and American pop， dance and so on.Use: Mobile Phones/computers/mp3/mp4/tablentsNotes:Size 1: KZ ED9 Hifi Headset without MicrophoneSize 2: KZ ED9 Hifi Headset with MicrophonePackage Include:1 x KZ ED9 Hifi Headset