GUZARE Boats Marine Radio and Speaker Package – Bluetooth MP3 USB AM FM Marine Radio with 4 Inch x 4 Black Speakers and…

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Waterproof Design: The Marine Stereo Receiver has been IPX6 rated. Two Pair (Total of 4 PCS) 4” speakers have been outfitted with the latest weatherproofing techniques.
Bluetooth: Built-in Bluetooth technology allows you to instantly play music via your smart devices– quickly and easily! (like iPhone, android, smartphones, iPad etc).  This stereo has no CD player, but has the ability to stream your audio wirelessly.
Media playback: Bluetooth, USB Port, AM/FM radio stations for up to date music/news/sports and more, NOAA Weather Band Tuner.
Marine Radio Power Output: 45W X 4 Max Power;  Balance / Fader / Bass / Treble, Preset built-in EQ and 4” Inches Marine Speaker Maximum handling 120 watts(Pair).
Installation Dimensions: The style of this speaker pair in white makes them easy to install with 4 inch standard size. RECEIVER SPECS – Dimensions Mounting Hole 3.1″ and  Dimension Mounting Depth 1.6″. SPEAKER SPECS – The outside facial Diameter is 4.88” with Mounting Hole Diameter: 3.8”, and Mounting Depth:1.37”