Lavalier mics (also called "clip-on" mics) are used for close pickup, such as for an public lecturer or TV interviews. Lavalier mics most often are a condenser mic. Ideally the Lavalier mic will pick up a speaker or singer and the pick-up pattern will fade quickly, not picking up other sounds close by.
Wireless Lavalier mics are commonly used on speakers on stage; the mic can be hidden or visible
Wireless tiny mics are used in theater productions. The small condenser mics can be hidden in the hair or taped onto the inside of the top of the shirt.
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