Verilux Voice Amplifier for Teachers Portable 2200 mAh Microphone Headset Set Black Flash Drive,with Strap Belt, Portable Voice Amplifier for Teachers Indoor PA System  (12 W)

VOICE AMPLIFIER CAN LONG WORK DURATION: Built in 2200mAh battery. Can work for 4-6 hours as voice amplify and last for 5 hours as music player, fully charged in 3hs. The stable performance is perfect for amplifying your voice & saving your throat. Built in DSP noise reduction and 3D stereo structure, not just can reduce the noise but also provide you a better sound effect.SUPPORT MUSIC PLAYBACK: Voice Amplifier can play TF (Micro SD) card and USB flash drive. You can repeat single song, loop all music and switch songs. You can repeat single tune, loop all music and switch songs. Supporting 3.5mm AUX audio input (Mic port can be used as AUX port), easy to use as a wired speaker. You can use it not only as a voice amplifier but as a music player with TF card or USB pen drive.POWERFUL SOUND: Compact size voice amplifier with 8W output is clear and noiseless, enough to cover a large room of 20-50 people. The microphone headset is lightweight and adjustable. You can adjust the distance between the microphone and mouth with its flexible gooseneck. Comfortable design for long sessions. Please keep the speaker and microphone at a distance to avoid facing each other so the signal won't get affected.VOICE AMPLIFIER WITH MICROPHONE: Coming with one headset microphone, meets your more need at different occasions. You can use the removable clip on the back to attach it to your belt or pocket, or you can tie it around your waist or hang it around your neck with the help of a belt, more convenient to use. Insert the microphone headset into the jack, it become your throat helper for indoor/outdoor speaking. Let you can be heard clearly by people.LIGHTWEIGHT POWER PACK: Voice Amplifier This microphone and speaker set is a portable public address system. Amplifies your voice and saves your throat. You can take it to multiple places, such as classrooms, bingo calls and outdoors. Output loud enough to cover a room with a large group of 20-50 people. A big help in speaking to 20-50 members in your group.