HW HAOWORKS Wireless Voice Amplifier Bluetooth Teacher Microphone 18W Waterproof Portable Voice Amplifier Headset Mic Rechargeable Voice Enhancer Personal Microphone for Classroom Outdoors

* POWERFUL Wireless Voice Amplifier: M800 portable microphone headset with speaker provides enough volume. Super 18W output, allows you to project your voice across a group of 20 to 65 people clearly and loudly. UHF wireless transmission technology,100 feet stable wireless connection at open area. ( When using the wireless mic, it is recommended not to exceed this distance to avoid interruption of the connection signal.) * ALL-IN-ONE Outdoor Speaker: Portable Voice Amplifier + Bluetooth Speaker + Power Bank. You can easy stream the music from your Bluetooth-enabled devices like Phone,Tablet and Non-bluetooth device via Aux input .The headset amplifer also supports TF Card, U Disk and Recording function. You can also use this portable amp as a mobile power source to charge your phone.What is more, you can amplify your voice and play music at the same time. The headset megaphone can be used as a karaoke microphone. * PORTABLE and WATERPROOF : Comfortable wireless headset mic with removable ear hook, supports...