Description: 150W maximum music power High-fidelity silk film treble High efficiency square design tweeter More sound, less energy Instant installation,Fits anywhere No magnetic field, tapes and credit cards are safe Built-in crossover,For all car audio systems Technical Parameters: Effective power: 35W Maximum power 150W Audio response: 35HZ-20KHZ Impedance: 4 ohms Tweeter: 25mm Thickness: 2.5cm Outside diameter: 5cm Diameter: 4.1cm Sensitivity: 91dB Packing weight:267g/9.41oz Packing size:23*15*5cm/9.05*5.9*1.96in Package Included: 2 x Car tweeters 2 x Clip-on-bases 2 x Screws 2 x Adhesive tapes 1 x User manual