ResponseBridge Bluetooth Voice Amplifier Waterproof 18W, Wired Microphone Headset Speaker, 4400mah Rechargeable Portable Amplifier Mini Mic Amp Personal Voice Saver Back Clip Belt for Teacher, Tour guide etc

* Please note that this is a wired microphone speaker.Personal Amplifier with Microphone: The sound of 18W speaker with mic covers more than 20,000 square feet. Even if the volume is set to the maximum, the sound will not be distorted, You don't have to shout to amplify your voice and reduce the burden on your throat. Come with microphone headset can adjust the angle between the mouth and the mic, very comfortable to wear. * Voice Speech Amplifier : It is not only a mini megaphone, it also supports Bluetooth/TF card/U disk/ AUX to play audio, and has power bank/recording/repeat function. Each function is very simple to use, no complicated steps. It is a very practical microphone amplifier speaker. * Waterproof Sound Amplifier: Whether amplifying or playing audio, its sound quality are excellent, no distortion. Speaker amplifier system with Rechargeable Battery at least 13 hours of use on a single charge. Waterproof, dustproof and drop-proof design suitable for outdoor and indoor activities. * Portable Mini...