Specifications:Comfortable to wear for long periods. Covers your ears and cuts out external sound very effectively.Ideal for all 3.5mm audio output, such as for iOS and for Android smartphone, MP3/MP4 player, portable music player, etc.Item Name: Wired HeadsetIs Wireless: NoConnectors: AUXJack: 3.5mmFrequency Response Range: 20 - 20000HzElectrical Impedance: 32Sensitivity: 91dB ?dBFeatures: Stereo, Lightweight, Comfortable, High PerformanceCable Length: 2.5m/98.43" (Approx.)Speaker Diameter: 4cm/1.57" (Approx.)Notes:Due to the light and screen setting difference, the items color may be slightly different from the pictures.Please allow slight dimension difference due.