7.7 Thunder Marine Series Marine Speakers Power HandlingPeak: 150WRMS: 75WPolypropylene cone woofer Rubber surround 1 Teteron dome tweeter Conformal board coating protects against corrosion Environmental 500hrs ASTM B117 D4329 Tested 4 ohms impedance 1.25 Voice coil Top-mount depth - 3.15Please note: This supplier will be closed on 11/24, 12/26, 1/2 for the holidays. The shipping cut off is UPS's cut off of 12/15 to try and have the products delivered by Christmas. Mtx 7.7 Marine Coaxial Speakers