ResponseBridge Voice Amplifier Microphone Headset 18W, Waterproof Portable Microphone and Speaker Set 4400mah Large Capacity Rechargeable Personal Mini Megaphone Amp for Teachers Classroom Meeting Outdoor and More

* Portable speaker with microphone : Clear and distortion-free sound can cover a large room of about 1500 square meters, 4400mah rechargeable battery can be used for about 10-12 hours. It can easily amplify your voice, others can hear clearly. Excellent in range, volume and battery Life. * Portable Voice Amplifier: The size is 4.72*3.77*1.77 inches and lightweight is 1.47lb. come with belt and back clip. Portability design gives you freedom of movement. Communicate clearly and maintain a safe social distance. Portable microphone headset with speaker suitable for teacher, trainer, coacher, shopping mall, presentation, speech, elderly etc.This is also a good gift！ * Waterproof Bluetooth Speaker: You can play audio via Bluetooth / USB / TF card / AUX / MP3.Bluetooth connection distance up to 35 feet away.The sound quality will exceed your imagination！This multi-function voice speaker has durable exterior materials.Waterproof, dustproof and drop-resistant design perfect for any outdoor / indoor activities. * R...