Feature●1-Inch Silk Dome Neo Magnet Tweeter●Impedance: 4 Ohms. Max Power: 250 Watts●2-Way Mount System: Angle and Flush●Ferro Fluid Cooling. 20mm Voice Coil●Frequency Response: 3.5KHz-20KHz. Sensitivity: 92dBDescription Blaupunkt TSS30 1-Inch Aluminum Car Tweeters, Single Voice Coil, 4 Ohms, 250 Watts Max