Polk MM651UM UltraMarine Mobile Monitor MM Series 2-Way Marine Speakers, 6.5" - Pair Power Handling: Peak: 400 watts per pair / 200 watts each; RMS: 200 watts per pair / 100 watts each Recommended power range: 15 - 110 Watts RMS per channel Completely sealed front designed for protection against water intrusion Meets ASTM international B117-03 and D4329-99 marine standards Built-on grille with tweeter mount