Style: NeckbandConnectors: 3.5 mmUse: Portable Media PlayerFunction: Noise Cancelling，MicrophoneCommunication: WiredModel Number: Rock ZirconColor: Black，WhiteUnit Type: piecePackage Weight: 0.180 kg (0.40 lb.) 1. Product Name: Zircon Sport Stereo Earphone 2. Speaker: 8 mm NdFeB speaker 3. Rated input power: 1Mw 4. Maximum input power: 3mW 5. IMPEDANCE: 16����15% 6. Speaker Sensitivity: 93��3 dB (at KHz 1mW) 7. Speaker Frequency Response: 20-20 K Hz 8.Microphone Sensitivity: -40dB��3dB 1kHz， 0dB=1V/pa11.Weight: 20g12.Whether with wic: Yes