YOCEWECA Wireless Voice Amplifier with Headset Microphone 18W Portable Mic-Speaking System 4400mAh Rechargeable Waterproof Sound Amplification for Teachers, Trainers, Tour Guides, Outdoor Activities, etc

* Excellent sound and penetration: Wireless Voice Amplifier has 18W output, sound covers up to 10000 sq.ft, streams a clear, natural and crystal voice for a small and medium room of 80-200 people. With waterproof feature, portable voice amplifier is perfect for outdoor activities * Save your throat: Portable voice amplifier with headset microphone is not only an ideal voice enhancer tool for teachers, trainers, instructors, tour guides, salesman or who with vocal problems, but also personal amplification system is one of the important speech aids with mask during Covid-19 for maintaining social distancing * Long Battery Life: With built-in 4400mAh rechargeable lithium battery, the working time of the speaker is about 10-12 hours with half volume, but uhf headset Mic only about 2-4 hours. If using 3+ hours, please use with plug-in mic/ purchase wired version (ASIN: B07F8SKW17) * Stable Performance: Portable speaker with headset microphone utilizes UHF wireless transmission technology, makes the signal trans...