SHIDU Voice Amplifier for Teacher S821 Microphone Speaker for Teacher Loudspeaker Bluetooth 5.0 TF Card USB Flash Drive MP3 Play back Audio Recording

SHIDU. Powerful Sound The voice amplifier is in compact size, but with 10W output crystal sound and no noise is loud enough to cover a room with a large group of 25-100 people. The stable performance perfect for amplifying your sound and saving your throat. Long Battery life and Multifunctional The voice amplifier with a 1100mAh built-in big rechargeable lithium battery provides 8 to 12 hours amplify time and 6 to 10 hours music time with a full charge. It takes only 3-5 hours to fully charge. You can use it not only as a voice amplifier, but also as a TF card or USB flash drive music play. Adjustable Microphone Headset The portable voice amplifier is lightweight and adjustable. You can adjust the distance between the microphone and mouth with its flexible gooseneck. Comfortable design makes it convenient for your teaching, training, presention and other activies. Compact and Easy Carry Around The portable microphone and speaker is in compact size and super lightweight only 0.36 lbs),