-5% Product available with different options Nautical cases Sound Marine Ultra Slim Speakers €26.11 €27.49 Extra-flat, with recessed depth only 25 mm, IP65 watertight. They are made with the new CUTTING EDGE technology, which makes it possible to drastically reduce the depth of the cones and at the same time ensure excellent acoustic performance. Minimum distance from the compass: 1 m. View