See photo for main specs, programming cable
https://www.qslcomms.com.au/product-page/programming-cable-for-baofeng-quansheng
 
This is a special bundle with an additional USB-C second battery, second battery has either 2000mAh/3000mAh or 3600mAh capacitity
Some different firmware links for extra functions
https://github.com/egzumer/uv-k5-firmware-custom/releases
https://simonthewizard.com/2024/01/14/quansheng-uv-k5-weak-cw-ssb-signal-improvement-ijv-2-9-firmware/
https://whosmatt.github.io/uvmod/