These speakers were tested in the harsh marine environment prior to being approved by the Jensen engineers. 150-watts. Corrosion-resistant and water-proof. The speakers are also magnetically shielded to prevent interference with marine electronics and compasses! 6.5'' polypropylene woofer and separate 1.25'' carbon tweeter. ABS surface mount housing makes for easy mounting. Housing can be removed when flush mounting is desired. Includes hardware.