4 Pair of 3.25" x 3.25" Piezo Tweeter Element DJ Speaker Car Audio Square Single Super Horn NTX-1004PZ 30 watts Peak power (each) Fequency: 4K - 20KHz Impendance: 4 - 8 Ohm Compatible with any impedance - No crossover required High quality tweeters that provide an immediate and precise response to any transients in the original signal.