Communication is what keepspeople connected. Workers need to communicate with each other about construction details through walkie-talkies, and players need to communicate with coaches and referees without external interference.

If something is wrong with theirdevice,they need to change all the machine and make a lot cost.

Microphone haven’t always been used inwalkie talkie. It wasn’t until about the 1970s that headsets andmicrophones were found in the pit. Today, everyscene is equipped with amicrophone to match the radio for easy access to make the talking.

Multiple types of microphones are a good choice.