Dolphin Audio Sp-1600Rbt 3,600-Watt Bluetooth Rechargeable Party Speaker With 15

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3,600 watts total power;
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Playback via Bluetooth(R) or USB/SD(TM) media;
WaveSync(TM) technology to pair with a like speaker (sold separately);
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15-in. speaker;
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Sound-activated 7-color ring lights with on/off switch;
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Built-in FM tuner;
3.5-mm auxiliary input;
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1/4-in. microphone input with volume/treble/bass and echo control;
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1/4-in. guitar input with volume control;
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Built-in rechargeable lead-acid battery with 12-volt external battery input;
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Built-in trolley handle and wheels;
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Includes user guide, warranty card, remote, wired microphone, AC power cord, battery cable, and auxiliary cable;