Firefighters in the fire scene need to be able to maintain smooth communication in the team at all times after wearing heavy protective equipment. This product can meet the needs of communication between multiple team members and multiple teams. The top and tail ends have different specifications. The socket can be compatible with the connection of communication masks, walkie-talkies, Bluetooth headsets and other different communication devices, and has wireless Bluetooth communication function, when used in the actual fire scene, you only need to wear it on the fire fighting uniform to truly liberate your hands and speak freely.