We use these microphones for events like weddings, karaoke, funerals, singers, speakers, acoustic guitars etc.
It is easy to adjust the sound and the sound quality is very good. Resistant to feedback (always take into account how you place your speakers).
Very useful when the client does not have a sound technician on site.
On / Off switch is not heard, but if you finger hard on the microphone the sound can be transferred.
All in all, a very useful microphone and the quality is rock solid!