100% waterproof enclosure & speaker system; High-density ABS construction with UV coating; Steel-reinforced mounting brackets fits most towers; Polypropylene speaker cones & titanium tweeters; Quick-disconnect compression terminals; Meets RoHS & CE certifications; Imp: 4ohm ; 750W max; 375W RMS; Freq resp: 30Hz-20kHz; Efficiency: 91dB @ 1W/1m; Includes braided stainless steel safety cable & stainless steel mounting hardware; Dim: 10″H x 10″W x 9.5″D; Titanium; Pair;