The multifunctional voice amplifier is very suitable for teachers, tour guide ect.<br> <br> Features:<br> Loud sound and clear tone quality.<br> Equipped with a headset microphone, working with the loudspeaker.<br> Multi-functional product which has TF socket to play audio files from micro SD memory card.<br> Can also be used as a FM radio receiver, meeting your different needs.<br> Echo Control design to make your voice natural and hollow.<br> With an indicator to show the battery status.<br> Built-in rechargeable lithium batteries can last about 5 hours continuously.<br> With an earphone socket, allowing you enjoy the sound without disturbing others.<br> Comes with adjustable waistband, one size fits most people.<br> Suitable for teachers, tour guide ect.<br> <br> Specifications:<br> Output Power: 25W(Max.)<br> Frequency Response: 120Hz-12KHz<br> SNR: 80dB<br> Mic Output Resistance: 16Ω-32Ω<br> Battery Type: 7.4V/1800mAh<br> Input: AC 110-240V<br> Output: DC 9V/350mA<br> Supporting Format: MP3<br> FM Received Frequency: 87.5MHz-108MHz<br> Item Size: 9 * 9 * 4cm / 3.5 * 3.5 * 1.6in<br> Item Weight: 202g / 7.2oz<br> Package Size: 18.5 * 14 * 7cm / 7.3 * 5.5 * 2.8in<br> Package Weight: 366g / 12.9oz<br> <br> Package List:<br> 1 * Voice Amplifier<br> 1 * Headset Microphone<br> 1 * Adapter(US plug)<br> 1 * Waistband<br> 1 * Antenna<br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>