Description:Brand Name: Langston LangsdomModel Number: Q1Style: In-EarImpedance: 32ΩSensitivity: 106 dB/vMax.Input Power: 19mWFrequency Response: 13Hz-22.5KHZCable: 1.2M Plug: 3.5mm， silver platedsize of driver: 13mmSpeaker: 6U， 32ΩMicrophone: YesPackage Included:1 X Langston Langsdom Q1 In-Ear Earphone