?Voice Amplifier?Amplifys your voice and saves your throat. The sound is clear, crisp, no noise and no distortion. The max 10 watts sound can cover about 10000 sq. ft (1000 ?), loud enough to cover a big room. | ?Multi-functional loudspeaker?It was a bonus that it incorporates an FM radio, amplification and music play with TF card/USB driver. It's easy to be worn around your waist with the belt or tuck into your pocket, and there is also have a Clear digital display. | ?Rechargeable voice amplifier?You can use USB cable to charge this mini voice amplifier, and built-in a 1800mAh big battery allows the microphone speaker to only take 3-5 hours to fully charge, but plays up to 10-15 hours of amplify time and up to 8-10 hours of music playtime. | ?Real voice saver?The wired headworn microphone is adjustable. You can adjust the distance between your mouth and the mic. Made of durable and wear-resistant ABS material, this voice amplifier looks fashion. Suitable for teaching, trainer, singer, coacher, tour guide, shopping mall, presentation, outdoor speech and etc. | ?After sales ?we provide after sales of this product, if you have any questions, please feel free to contact us, we promise we will provide a satisfied solutions for you.