Bests & Worsts Reviews from Amazon

I am so thrilled with this. As a teacher, I use my voice all day, every day. It can be quite taxing, but since using this, I can remain mobile and everyone can still hear me without havingto strain or raise my voice. Apparently, it does alter or tinnify (if that's a word) your voice a bit, but the built in speaker is definitely loud enough for the entire classd top hear me and the rechargeable battery lasts for weeks. A couple other teachers bought these as well after seeing and using mine. A very useful product.