We are manufacturer, professional sound speakers. 1, 3-6W 2,Plastic cover.within transformer 3,Waterproof. 4,As more export ModelYF-627Rated power3-6WLine voltage70-100VSensitivity91+_3dBFrequency response130-16KHzHole dimensionsø148-158mmItem dimensionsø1802*60mmWe are manufacturer, professional sound speakers.1.3-6W2. Plastic cover, within transformer.3.Waterproof.4.As more export. Sound ...