Gotcha. It's been a while since I purchased it, so I must just be misremembering.It definitely comes with USB cables. I recall mine came with them when I got my 5K. Pretty sure they were not braided but I don't remember at this point since it was years ago at launch. The Qudelix producr page shows it still comes with USB cables.
https://www.qudelix.com/products/qudelix-5k
After all these years, it is still working well with some minor expected battery degradation (knock on wood). Definitely have gotten my money's worth and one of the best audio related purchases I have made.
I've used mine almost daily since I got it (walking to work, around the house). Ridiculously convenient since I use it almost exclusively in bluetooth mode. Far from the last word in sound quality, but the PEQ capabilities make a big difference for such a small, convenient, inexpensive device.