Basically, a clip-on microphone is always useful when you need or want freedom of movement. For example, you don't have to stay near the microphone stand or you have both hands free for other things. Lapel microphones are usually attached to collars, ties or other items of clothing with a small clip. Any necessary cabling to a high-frequency transmitter, which is attached to a bag or belt, can easily be hidden under clothing. Lapel microphones are used in TV, theatre, concerts, videos, vlogs, podcasts or public speaking.