❀【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 1800mAh built-in big rechargeable lithium battery provides 8 to 12 hours amplify time and 6 to 10 hours music time with a full charge.And the voice amplifier takes only 3-5 hours fully charged.And you can use it not only as a voice amplifier but a music player from a TF card or USB flash disk. | ❀【Adjustable Microphone Headset】 -The microphone headset 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. | ❀【Campact and Easy Carry Around】 - The portable microphone and speaker is in compact size and super lightweight, you can use the back detachable clip to fix it on your belt or pocket, or you can also tie it around your waist or hang it on your neck with the help of the waistband. | ❀【Warm Tips and Guarantee】 -Please keep the speaker and mic for a distance and facing away each other to avoid the signal affected.Worry -Free Warranty.We provide return and refund without reason in 30 days, and 12- month warranty, and lifetime technical upport.