All4Cellular offers the HMDX Portable Speaker-On-The-Go in Black, Blue, or Pink for $7.95. With $2 for shipping, that’s the lowest total price we could find by $16. It features an inner mesh pocket for your device, zipper closure, and compatibility with any smartphone or mp3 player that has a 3.5mm headphone port. It requires two AA batteries (not included).

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