Description: Style: In-Ear Brand: ROCK Color: Black,White Connectors: 3.5mm Rared input power: 1mW Speaker sensitivity: 93± 3dB Maximum input power: 3mW Speaker: 8mm NdFeB speaker Operation temperature: -10\u2103~ + 55\u2103 Speaker frequenvy response: 20-20K Hz Microphone sensitivity: -40dB±3dB@ 1kHz,0dB=1v\/pa Feature: 1.Compatible with various Android devices, partially compatible on iOS devices. 2.The earphone function include noise Cancelling, microphone,remote wire control. 3.The oxygen-free copper(OFC) HIFI cabel features excellent conductivity and distortion-free sound. 4.Adopting composite vibrating diaphragm,it provides more smooth vibration,hamonic amd natural tone. 5.The cavity is made of nano zirco,which features crystal clear ,high density,high hardness and excellent distortion-free sound. Package Including: 1 x ROCK Zircon in-ear Earphone