@indydonna My Starkey Hearing Aids (from the VA) have a bluetooth external mic that one can clip on to clothing or be worn with a lanyard. It can operate as a mic so you can set it up by the person giving the lecture or presentation and it will broadcast to your hearing aids. With Starkey there is an app called "Thrive" that you can download to the phone, so the phone serves as the controller.. I assume by 2020 most brands of hearing aids would have this feature.. I use it giving it to my partner who is often in another room and wants to pass on a gem of wisdom..