Feature: 1.Noise isolating function. Enjoy the ultimate in style， comfort and listening pleasure. 2.Build-in microphone， make calls hands-free with a multifunction button. Also the button can control music streaming.3.3.5mm Jack， ideal for All Apple Devices， Androids Smartphone， Windows Phone， MP3/MP4 Player， Portable Music Speaker and all other 3.5 jack devices.4.Its unique design fits well comfortable in your ear. Made with Aluminum， a durable earphone for you. The earphone cup shape delivers an impressive bass and acoustic sound. Parameter: Style: In-EarCommunication: WiredFunction: Noise Cancelling， MicrophoneConnectors: 3.5mmUse: Portable Media PlayerPackage: YesIs_customized: YesEarphones category: general earphones， voice earphones， Hifi earphonesFrequency response range : 50Hz-50000HzCable length: 1.25CMSensitivity: 100dB/mWImpedance: 32��Color:Gold， Silver， BlackItem Contents:1 x Hifi Headphone， 1 x Package