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JBL PartyBox 310 Black - Take your karaoke parties to the next level with JBL PartyBox 310. This mobile entertainment machine is designed perform anywhere and everywhere music takes you. Built-in mic guitar inputs make it perfect for live performances, while a dynamic light show, cool vocal effects 240 watts of Pro Sound will help you feel sound like rock star. With Bluetooth connectivity 18 hours battery life, options are endless.