KZ ZST Wired On-cord Control Noise-canceling In-ear Earphones Built-in Mic ON-CORD CONTROL Main Features:Unique style with a removable cableMoving coil and moving iron double unit soundErgonomic design for your wearing comfortsHigh-definition stereo music, more clearOn-cord operation for on-cord calls / song switch control / voice controlIntelligent noise-canceling, high-definition enjoyment3.5mm audio jack, compatible with most of phones, computers, and potable media devices Brand: KZModel: ZSTType: In-EarWearing type: In-EarFunction: Answering Phone,Microphone,Noise Cancelling,Song Switching,Voice controlLanguage: EnglishMaterial: ABSConnectivity: WiredApplication: Computer,Mobile phone,Portable Media PlayerCable Length (m): 1.2mDriver unit: 6-10mmFrequency response: 20-20000HzImpedance: 18ohmsSensitivity: 120dBCompatible with: Computer0.058Package weight: 0.083 kgPackage size (L x W x H): 10.50 x 7.00 x 3.50 cm / 4.13 x 2.76 x 1.38 inchesPackage Contents: 1 x LZ ZST Earphones, 1 x Cable, 1 x English User Manual, 2 x Pair of Ear Tips