Special Features:Built-in crossoverAudio Sensitivity:89Speakers Types:TweetersBrand Name:OEMCar Make:UniversalColor Name:BlackModel Name:B1563Item Weight:230 gFrequency Range (Hz):3500-22000Impedance:4Item Type:SpeakersFeatures: 100% Brand New&High QualityThis speaker system is good for use at the Car，Motorcycle， etc.Good workmanship， portable and light weightLoud sound and clear tone qualityNo magnetic field，tapes and credit cards are safeMore sound，less energyBuilt-in crossoverEasy installtionWork for iPod， CD player， MP3/MP4/MP5 player， etc.High efficiency dome tweeterSelf-adhesive on back， simple to installWonderful loudspeaker brings your car great audio experienceWith only 2.8V power， you can feel 89db pure soundSuit for all carsParameter: Built-in crossoverFor all car audio systemsSensitivity: 89dB/W/mMax Power: 140 WattsRMS Power: 50WFrequency response: 3500-22000HzImpedance: 4 ��Volts: 2.8V