Review on 🔊 Powerful Bluetooth Voice Amplifier with Headset Mic - 25W Loud, Rechargeable 4000mAh Speaker Set for Teachers, Meetings, Elderly, and more by Stephanie Lum

I work in a noisy operating room, my vocal cords are damaged and I only have to run this machine continuously for 5 hours and it won't. The headset only works 2.5 hours, but the amplifier can work 4 hours. That doesn't work for me at all. I think I could buy 2 headsets to get through this, but well, really. Everything else works great.