Product informationProduct name: KZ Castor Tunable in ear
HeadphonesFrequency response range: 20-40000HzImpedance of Harman Curve
Version n: 31-35Impedance of
Harman Curve Extra Bass Version: 16-20Sensitivity of
Harman Curve Version: 1053dBSensitivity of
Harman Curve Extra Bass Version: 103
3dBJack type: 3.5
mmPin type: 0.75
mmWire: Detachable double and transparent black wireWire length: 120 5CMProduct list1. Headphones (Harman Curve/Harman Curve extra bass version)B. Eartips *3 pairs3. Double parallel wire4. Tuning lever5. Instructions