Sony MEX M71BT Bluetooth Marine Receiver with Two Pairs of XS MP1611 White 6.5" Speakers and Sirius XM Tuner Bundle Stone Blue advanced power source solutions advanced power source solutions UPC: 726424792276 5 cm) dual cone 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 Speaker System CONFIGURATION 16 cm Dual Cone Speaker SIZE 6 Sony MEX M71BT Marine CD Receiver with BLUETOOTH Wireless Technology Enjoy more music and better connectivity at sea with the MEX M71BT marine Bluetooth receiver