Poly-Planar VHF Extension Speaker -10W Surface Mount - (Each)White Completely waterproof and corrosion-proof. Features stainless steel grills, sturdy plastic frames, polypropylene speaker cones and teflon-coated wires. Available in black or white color speaker. Peak Power Handling 20Wpair. Speaker Impedance 4 ohm. Frequency Range 1K to 10K Hz. Weight 1.05 lbs per Speaker.