1. Absolutely wire free. I have not used any wires while connecting the cameras. 2. Rechargeble: I don’t have to use any batteries or replace them as they have built in rechargeble batteries. I just have to charge them once in a.k the or so depending on the usage using a USB cable. 3. Hub free: There is no hub involved.
https://www.amazon.com/Security-Surveillance-Rechargeable-Battery-Powered-Detection/dp/B089D5STLM

