ITEM NAME:2Pc Tweeters Piezoelectric Tweeter Loudspeaker Ceramic Buzzer Treble Square A6R9 2Pc Tweeters Piezoelectric Tweeter Loudspeaker Ceramic Buzzer Treble Square A6R9 Frequency: 5-20KHz Sensitivity: 91dB Maximum power: 150W Outside diameter: 85 * 85mm Minimum opening size: 75mm Colour: Black material: plastic Package included: 2pcs Audio Speaker