Sony XS-MP1621 6.5 in (16 cm) 2-Way Coaxial Marine Speaker Enjoy powerful sound with 45 W power handling 6.5 in (16.5 cm) 2-way speaker design Hear rich bass and clear vocals with a rigid woofer cone structure IPx5 certified for marine use Hear soaring highs and resounding lows with a wide 45–20000Hz frequency range.