High Quality Polypropylene Injection Cone Butyl Rubber Surround 1” High Temperature Voice Coil 1” Neodymium Mylar Dome Tweeter Super Piezo Tweeter Silver Terminal Connections 7.5 Oz Magnet / 15 Oz Magnet Structure 60w Rms / 300w Max Music Power Frequency Response: 60hz ~ 20khz Sensitivity: 91.2 Db/W/M 4 Ohms Impedance