The requested accommodation seems perfectly reasonable to me. The annoyances are annoyances, nothing more. If you have several of these devices, great. If not, no big deal. When a student asks a question, repeat the question yourself, with your device active. Then answer it. It's not hard, not very time-consuming, and a good exercise--plus, it helps the other students too because often student questions are kind of garbled, miss the mark but are in the vicinity of something interesting, or gasp hard to hear.