Pyle's Hydra series speakers are water resistant and designed for use in your boat, on the dock, by the pool, or simply mounted outside. They're designed with rust-proof mesh covers for quality protection. The PLMR605B are 400-watt, 6.5 two-way, full-range speakers suitable for marine use. These black speakers are equipped with a neodymium dome tweeter for rich highs and a 1 aluminum voice coil for accurate sound reproduction. Package includes a pair of speakers, installation hardware, and grills. 6.5" Dual Cone 2-way Full Range Speakers. 400 Watts Peak Power/ 200 Watts RMS. Marine Coated Completely Waterproof. For Marine, RV, Automotive, & Motorcycle Use. Polypropylene Cone with Butyl Rubber Surround. 1" Aluminum Voice Coil. 1/2" Neodymium Dome Tweeter. Frequency Response: 85Hz-20Khz. Sensitivity: 90dB. 4 Ohm Impedance. Complete Pair with Grill and Mounting Hardware. Color: Black.