4" x 10" Three-Way Speaker System, Paper Cone, Rubber Surround, 2" Piezo Midrange, 1" Piezo Tweeter, 300 Watts Rated Power, 50 oz. Circuit Magnet, 4 Ohm Impedance, Frequency Response: 80Hz-16kHz, SPL: 90dB, Mounting Depth: 2.5", Includes: Speaker Wire, Mounting Screws, & Speaker Grills