sound quality corresponds to the price. Some limited control over bass and treble, but no more. The speakers are small and tinny. The battery wasn't included, so I can't judge. I have an old P&C battery, but the plug that came with it won't charge the battery. I don't know what "Transparency" means, so I didn't rate it. Also, it would be nice if it had a SIM card slot so I could pop in a card without having to pair my phone or plug in an auxiliary device every time I use the box.
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