Giecy Wireless Microphone Headset, UHF Wireless Headset Mic System Rechargeable Microphone and Wireless Receiver for Voice Amplifier,PA System,Teacher, Tour Guides,Coaches

Giecy Wired Headset Microphone for Voice Amplifier,Flexibly Adjustable Microphone for Teachers, Coaches, Presentations, Seniors

Giecy Voice Amplifier Portable wireless Voice Amplifiers Personal 1800mAh Rechargeable for Classroom Meetings

Giecy Voice Amplifier Portable 20W 2600mA Rechargeable with Wired Microphone Headset for Teachers Tour Guides,Meetings and Classroom