This portable voice amplifier/radio is a really useful little gadget for anyone who really needs to be heard. It does a good job of amplifying your voice and comes with a headset microphone, though you can use your own if you have one. While testing out the amplification, I never had any static feedback, and was able to amplify my voice significantly.

The headset is very small and not uncomfortable, you don't really notice it after the first few minutes.

The box itself is surprisingly heavy for its size. You can still comfortable clip it onto your belt, or carry it with the shoulder strap that is included, but I wouldn't describe it as "lightweight". It also doesn't come with any instructions to speak of. There's a manual, but it's a single page reproduced in multiple languages which simply lists things that the box can do without any instruction on how to use it. I had to refer to this Amazon page to find any instructions worth following.

As well as amplifying your voice, this device also works as a portable FM radio. It doesn't pick up AM signals, unfortunately, but any FM stations in my area were easy to pick up, and the quality of the audio was really clear. This device also has a rechargeable battery, and I was able to get 10+ hours out of it on a single charge, which should be plenty for even a long day.

Another feature that you might enjoy is the ability to attach a USB, or to attach this to a music source via an AUX cable, and use it that way to play music as a portable speaker.

Overall, this device does two things well: it's a portable FM radio and a portable voice amplifier. I think it's worth buying for either one of these two things, and if you need it for both, even better.

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Pros
+ Portable radio and voice amplifier
+ Audio quality is clear even at high volume
+ FM radio easy to set up
+ Comes with headset for voice amplifier
+ Can be clipped onto belt and has attachable shoulder strap
+ Headset is comfortable and non-irritating.

Cons
- No instructions included
- Only FM radio
- Much heavier than expected

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Note: I received this product at a discounted rate in exchange for an unbiased, honest review as provided here. As a consumer advocate, I believe in providing quality and honest feedback and receiving a product at a discounted rate will never affect my opinions.