Voice Amplifier,15W Rechargeable Portable Microphone for Teachers,Lightweight Personal Microphone with Speaker Wired Headset Supports Bluetooth,Recording,FM Radio,TF Card/AUX Black music_update_2021 Spend a few minutes to

Spend a few minutes to select the most appropriate frequency before using this system

the unit has a Stereo RCA jacks and a headphone /line output

It is tailored for spoken word

5mm with rubber 7/16" 11mm without rubber 0

for Microphone

Voice Amplifier,15W Rechargeable Portable Microphone for Teachers,Lightweight Personal Microphone with Speaker Wired Headset Supports Bluetooth,Recording,FM Radio,TF Card/AUX Black music_update_2021 Spend a few minutes toTeacher must haves: WB002 Bluetooth voice amplifier can be a thoughtful and practical gift for a teacher who frequently speaks in front of large groups or classrooms. 15W powerful output could cover 10000 sq. ft,kindly recommend use this portable headset microphone speaker system indoors like classroom,it's plenty loud for a class of around 50 middle schoolers to hear you. Easy Pairing and Operation: Wireless voice ampliifer unit is very easy to pair