Excellent for Use On Boats/ Marine/ Decks/ Patios/ Poolside/ Outdoors – Completely Water Proof – 3.5” Aluminum Injection Cone Woofer – 40 Oz. Magnet Structure – 1” High Compliance Myiar Tweeter – Capacitor Crossover Network – Bass Reflex Vent for Added Bass Response – Heavy Duty ASB Construction – Quick Connect/ Disconnect Speaker Terminals – Unique Spring Loaded Mounting System – Removable Rustproof Mesh Grills – Power: 150Watts RMS/ 300Watts Peak – Frequency Response: 60Hz-20kHz – Impedance: 4 Ohms – Dimensions: 4.75”(W)x 7.25”(H) x 4.75”(D)