Designed to withstand the harsh marine environment and comply with International AS Standards for UV Stability (AS TM-D4329) and Salt/Fog Resistance (AS TM-B117). Comes complete with three grille options (cloth, standard and sport) as well as three gel badge options. (IP65) waterproof & dust standards. Efficiency (1W/1M): 90dB Frequency response: 70Hz-22kHz Impedance: 4 Ohms Magnet type: Shielded Max power (watts): 200 Mounting depth: 3" Tweeter type: titanium dome