Sony SRS-BTS50 Normal & Surround Mode Comparison - YouTube
Connecting your new SRS-BTS50 portable speaker via NFC/Bluetooth - YouTube
Sony SRS-BTS50 Bluetooth Speaker (Red) SRSBTS50/RED B&H Photo
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5V 2A DC 4.0*1.7 AC/DC Wall Charger Power Adapter For Sony SRS-BTS50
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Sony SRS-BTS50 Bluetooth speaker (pictures) - CNET
Amazon.com: Sony SRSBTS50 Portable Splash-Proof NFC Bluetooth Wireless Speaker System (Black) (Discontinued by Manufacturer) : Electronics