Features： 1、High‑efficiency dome tweeter, more powerful sound, less power consumption. 2、Provides stable high frequency response, pitch accuracy and natural sound. 3、Features 180W maximum power, 50‑20000Hz frequency corresponding, 4ohm impedance. 4、Superior magnets with high power to control the moving voice coil. No magnetic field, tapes and credit cards are safe. 5、Built‑in crossover, suitable for all car audio systems. Compact size, simple installation, suitable for any place. Specification： Item Type: Tweeter Speaker Material: ABS + Metal Maximum Power: 180W Rated Power: 55W Frequency Response: 50-20000Hz Impedance: 4 Ohms Sensitivity: 90dB Application: Universal for car audio system Package List： 2 x Tweeter Speaker 2 x Speaker Cover 2 x Small Speaker  2 x Cables 8 x Screws