Specification:Features:Brand new aftermarket Audio Speaker with high efficiency. Will work great of a factory stereo or aftermarket stereo. It is easy to install. It fits anywhere and all car audio systems. There is no magnetic field, tapes and credit cards are . Suitable for the auto car audio, and the sound will be very clear.High efficiency design tweeter. More sound, less energy.Specifications:Color: black+blueEffective power: 20WMaximum power: 130WAudio response: 80-22k（hz）Impedance: 4 ohmsTweeter: 25mmThickness: 2.5cm/1.0inOutside diameter: 5cm/2.0inDiameter: 4.1cm/1.6inSize: shown as pictureSensitivity: 91dBPackage Weight: Approx.238gFitment: for all car audio systemsPackage List:2 x Car Tweeter SpeakerInstall PartsNotes:1. This is a high quality aftermarket product but not authentic.2. Please allow 0.5 ~ 1 inch error due to manual measurement. Thanks for your understanding.3. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.