This pair of 3-3/4" multi-purpose speakers have a long-excursion polypropylene cone woofer with a 5/8" ferrofluid-cooled polycarbonate tweeter. This pair of speakers can produce up to 80W maximum @ 8 ohms of rich and detailed sound. These speakers use a weather resistant design making them useable indoors or outdoors. They are also magnetically shielded to prevent interference with TVs and computers. These speakers include mounting brackets and rubber feet. Dimensions are 7.25" H x 4.5" W x 5.25" D.