All-Weather 4" 2-way 2 Ohm Speakers UV-treated polypropylene woofer with Santoprene rubber surround, 1/2" PEI balanced dome tweeter with neodymium magnet, UV-resistant polymer basket, Stainless steel mounting hardware included, Sealed motor structure and locking terminal covers, Comes with both charcoal and white grilles, Works with 50 watts of power