UiiSii C100 Super Bass Stereo In Ear Headphone - Black Product details of UiiSii C100 Super Bass Stereo In Ear Headphone - BlackBrand: UiiSiiImpedance: 16 omDriver unit: 10mmSensitivity: 853+-dBSpeaker size: 10mmCable length: 120cmFrequency range: 20-2000...