Norwii Bluetooth Voice Amplifier, Power Amplifiers, Portable Mini Wired Microphone Headset for Teacher Classroom & Outdoor Lectures, Teaching, Tour Guides, USB-C Rechargeable - 4000mAh, Black

I use this in the cafeteria, at parent pickup and sometimes in a classroom to amplify my voice. It is very effective in large open spaces so students can hear me. At car pick up parents in cars and students can hear my announcements. Sometimes I even sing to them for some good laughs at dismissal! I even bought one for my partner at duty because she loved it. It’s so easy to use!! It’s a great investment.

This seems to have a great sound. Very clear and can get loud enough for the purpose of me buying it which was to be able to be heard better due to a paralyzed vocal cord from throat surgery. It is small but impactful and seems to hold a pretty good charge even when left on overnight. I don't use it very often as I feel weird like I should be giving chores but it's a little difficult to do that from my bed as a quadriplegic LOL. I like it when I needed it. It's definitely helpful and appreciated. If you needed get it, it can make all the difference.

Works well. The longest I've used it is 90 minutes at a time, so it holds a charge for at least that long.The headset is cheap and mine stopped working after 4 uses. The mic on the headset is on a bendable mount, so I'm thinking a wire came loose in there from adjusting the mic. I tossed the headset and now I use another lavalier mic I had and it continues to work great.As with any microphone/speaker combo, if you hold the mic near the speaker you'll get a feedback loop and shrieking noise.Overall I recommend this. It's cheap and it works.

I use to be a Substitute gym teacher and this device is indeed ... loud. Works wonderfully inside the gym and classrooms. This device does win 5 stars BUT! My only complaint (or recommendation) is how the ON and OFF works on this device. It should be a button, not the way that it is. If they can fix that one day, this would be 10 out of 10. Still 5 stars overall.

I am very soft spoken, so when I teach or give presentations, it is difficult for me to project my voice to a large crows for extended periods of time. (Sore throat after speaking more than 10 minutes loudly). So this device allows me to speak in a normal voice and just increase the volume.It is sensitive so when walking around if you bump the mic it pics up every sound and getting the mic close will make the screeching sound. It was also comfortable to wear for extended periods of time. The battery lasted hours. The sound quality isn't amazing, but people can hear you clearly. When i say it isn't amazing i mean that it doesn't have a lot of bass, so your voice doesn't sound as "full" but it can be heard clearly

Practical , good quality

Although relatively inexpensive, the quality of the amplification is lacking and causes your voice to sound somewhat distorted. Also, the microphone has to be placed exactly right to pick up your voice.

Works really well and will use for any future cosplay with masks/helmets on