iwish Rock Earphone Nano Zircon Stereo Earphone Headset 3.5mm in Ear Headset Earbuds for iPhone Samsung with Mic&Remote Black;

Specification:

Material: Zircon

Speaker: 8 mm (8 mm NdFeB speaker)

Rated input power: 1Mw, Maximum input power: 3mW

IMPEDANCE: 16¦¸¡À15%

Speaker Sensitivity: 93¡À3dB (at 1KHz 1mW)

Speaker Frequency Response: 20-20K Hz

Microphone Sensitivity: -40dB¡À3dB(1kHz), 0dB=1V/pa

OPERATION TEMPERATURE: -10Celsius --- +55Celsius