Ebay offers Boss 6.5" Speakers & Waterproof Marine Gauge Receiver for $135 (reg $262) after code with free shipping.

Apply Code: SAVEONGIFTS

Product Description:
This marine audio package by Boss (model MCKGB350B.6) includes an HD radio, Bluetooth connection, and a USB port. It has an auxiliary input and runs on an RMS of 180-watts. The waterproof radio is 11 inches long, 8.125 inches high, and 8 inches deep. The radio can be operated from a distance via a remote control.