Are you sure about that?
I just ordered the UV-K5 from Amazon sold by Quansheng and it is labeled as having USB C charging.
There's also a third party seller with an item description of "UV-K6 UV-K5(8)". That listing seems fishy.
I don't see a "UV-K6" listed on the Quansheng web site [1].
EDIT: After more research it looks like the UV-K5(8) is also known as the UV-K6 [2]. I'm curious which model I receive.
[1]: http://en.qsfj.com/products/?series=3
[2]: https://hagensieker.com/2024/03/12/quansheng-uv-k6-radio-rev...