>>1340547Both wired and Bluetooth ones radiate electro-magnetic waves. But Indeed wired headphones put much less energy in such transmission.
Though it's illegal, but absolutely possible to jam Bluetooths one.
Talking about privacy as I know usually in case of wired connection there is s simple analogue signal, while Bluetooth devices probably have some security layer, but here you have dive deeper in protocol and specifications to understand level of protection.