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JBL Flip 4 vs Sony XB21: compare preço e ficha técnica das caixas de som | Caixas de som | TechTudo
Sony SRS-XB21 Portable Wireless Bluetooth Speaker, Black (SRSXB21/B)
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JBL Flip 4 vs Sony SRS-XB21 - Which one is the better outdoor speaker? | SpeakerFanatic
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sonyxb21 - YouTube
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