GringoPost | Ecuador: Bluetooth, simple PA recommendation?

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Bluetooth, simple PA recommendation?

Hi, I'm looking to gently reinforce a single person speaking, nothing terribly loud/powerful.

I would like to:

1. Buy inexpensive Bluetooth-capable lapel mic(s)
2. Broadcast directly to Bluetooth speaker, which I already have.

Is there such a thing, available to order online in US? Of course, if necessary, I can run the signal through a smartphone or tablet Bluetooth app. But I don't want to buy an elaborate "normal" PA system.

Any recommendations highly appreciated.

Paul Meers