Old faithful. Used by many online fitness pros.
Comes with fuzzy thing to put on top.
You can use this the way we do, OR have a smaller mic that is wired to the receiver that is so small you can put in your bra.
The most convenient for sure.
Wireless bluetooth to phone connection.
Doesn't get much easier than that.
Cheap but you can use with any device and it plugs into your phone!