Product highlights: 7.7" 2-way marine speakers with RGB LED lighting (pair) injection-molded, mica-filled polypropylene woofer with synthetic rubber surround Transflective cone emits even glow when lit, appears silver with lighting off 1" silk dome tweeter 2-way crossover attached to the woofer basket UV- and corrosion-resistant polymer baskets and grille designed for free-air applications (no enclosures needed) for best performance, speaker needs at least 2 cubic feet of airspace power handling: 100 watts RMS (200 watts peak power) impedance: 4 ohms frequency response: 45-25,000 Hz sensitivity: 91 dB cutout diameter: 6.188 frame diameter: 7.712 mounting depth: 3.38