For your reference, you can check the following content:
1. The earbuds are connected to the walkie talkie via Bluetooth. The flash connector does not support use when plugged into a walkie talkie. The TYPC port of the walkie talkie can only be used to charge the walkie talkie. It is a one-way port that does not recognize dongles and cannot provide power to dongles;
2. Only public network walkie talkies support full duplex mode, and public network walkie talkies require inserting a SIM card.
(1). Public network intercom: Use a SIM card for intercom, however, public network intercom also supports PTT intercom. When using PTT intercom, you can press and hold the intercom button to achieve intercom;
(2). PTT intercom: Only PTT intercom can be used, not public network intercom. When conducting a PTT intercom, press and hold the intercom button for intercom.