uxcell Earphone w/ Microphone for PC VOIP Online Chatting Unilateral microphone: ideal position for greatest comfort, suitable for everyone. Frequency range: The earphone: 100-20KHz Microphone: 50-16KHz Connector diameter: 3.5mm; Cable length: 139cm. Approx Connector : Silvery-plated; Color: Black; Weight: 40g Package Content: 1 x Earphone