Feature 1Compact And Portable: This mini voice amplifier microphone headset is small in size and light in weight, which is very convenient to carry around and use. 2Multifunctional: This mini voice amplifier is multifunctional and can be widely used in a variety of scenarios such as teachers' lectures, presentations, guided tours, training and other scenarios, providing clear and loud sound to optimize the listener's experience. 3Rechargeable Design: This portable voice amplifier adopts rechargeable design, which can be used for a long time on a single charge, so it is convenient for users to use it continuously without power supply, without worrying about the power problem. 4Outstanding Sound Quality: This rechargeable voice amplifier has excellent amplification and clear sound quality to maximize the effect, ensuring a great sound experience no matter where you are giving a speech or singing. 5Built In High Performance Decoder Chip: This portable mini voice amplifier has a built in high performance decoder chip, holding MP3 format voice playback, users can use U disk or memory card to play voice easily, convenient and practical.Item Type: Voice AmplifierMaterial: ABSBattery: Built In 1800mAh Lithium Polymer Battery (Included)Charging Voltage: DC5VBluetooth Version: 5.0Compatible Devices: Computer, Smartphone, Tablet, U Disk, Memory CardWeight: Approx. 384.00g / 13.55oz.wang-edit-text{font-family:'Arial' !important;}.wang-edit-text table {border-top: 1px solid #000;border-left: 1px solid #000;}.wang-edit-text table td,.wang-edit-text table th {border-bottom: 1px solid #000;border-right: 1px solid #000;padding: 3px 5px;}.wang-edit-text table th {text-align: center;}Package List1 xVoice Amplifier1 x USB Data Cable1 x Belt1 x Microphone