This device is portable, but its sound is not!

Wireless audio gadgets are the rave now, but it wasn’t always like this. Bluetooth has been around for more than a decade, and while the convenience of going wire-free offered by the technology was acknowledged earlier on, due to issues with audio quality and connectivity, its use as a medium of streaming audio didn’t become mainstream until Apple took the bold step to exclude the 3.5mm headphone jack from the iPhone 7 in 2016.
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https://www.xiaomitoday.com/treblab-hd7-review-waterproof-bluetooth-speaker/