Recommended Power Range 30 100 watts RMS per channel. Clamps fit 1 3/4, 1 7/8, 2, 2 1/4, 2 3/8, 2 1/2 tube. Frequency Response 40-22,000 Hz. Pair of uv resist black coated wakeboard speaker polk db652 300w marine speaker this item can be shipped to united states, china, canada, united kingdom, denmark, romania, slovakia, bulgaria, czech republic, finland, hungary, latvia, lithuania, malta, estonia, greece, portugal, cyprus, slovenia, japan, sweden, korea, south, indonesia, taiwan, south africa, thailand, belgium, france, ireland, netherlands, poland, spain, italy, germany, austria, bahamas, israel, mexico, philippines, singapore, switzerland, norway, saudi arabia, united arab emirates, qatar, kuwait, bahrain, croatia, republic of, malaysia, brazil, chile, colombia, costa rica, panama, trinidad and tobago, guatemala, honduras, jamaica, antigua and barbuda, aruba, belize, dominica, grenada, saint kitts-nevis, saint lucia, montserrat, turks and caicos islands, barbados, bangladesh, bermuda, brunei darussalam, bolivia, ecuador, egypt, french guiana, guernsey, gibraltar, guadeloupe, iceland, jersey, jordan, cambodia, cayman islands, liechtenstein, sri lanka, luxembourg, monaco, macau, martinique, maldives, nicaragua, oman, peru, pakistan, paraguay, reunion, vietnam, uruguay.