5W 2400mAh Voice Amplifier Multifunctional Portable Personal Voice Speaker with Microphone Display for Teachers Speech Details: GOOD HELPER FOR YOU: Amplify your sound in crowded occasions. This voice amplifier can provide 5w clear and soft sound to cover about 1000 square meters; let everyone hear what you say. HIGH SOUND QUALITY: Surround 3D sound field; provides high sound reproduction and clearer sound quality; make your voice clear and soft; and will not produce harsh noises. SMALL AND PORTABLE: The size is only 4x3x1in; compact and lightweight; it will not burden you too much. Comes with an adjustable strap; allows you to wear it on the waist or hang around the neck. MUSIC PLAYER FUNCTION: It supports USB flash drive playback and TF card playback; you can repeat a single tune; loop all music; and switch songs/recording content; you will never miss any important information again! WIDELY USE: Great for teachers; tour guides; physical trainers; and anyone who needs to improve their sound. For classroom; lectures; speech; training; meeting; shopping mall; etc. FUNCTIONS: 1. This voice amplifier can provide 5w clear and soft sound to cover about 1000 square meters; let everyone hear what you say. 2. Compact size and lightweight; comes with an adjustable strap; allows you to wear it on the waist or hang around the neck; easy to carry around. 3. It supports USB flash drive; TF card; phone and computer playback; you can repeat a single tune; loop all music; and switch songs/recording content. 4. 2400mAh Large capacity rechargeable battery; only need to charge for 4 hours; can last for 4-6 hours. 5. Surround 3D sound field; provides high sound reproduction and clearer sound quality; make your voice clear and soft; and will not produce harsh noises. 6. With display screen; easy to read. 7. With a headset microphone; release your hands so you can talk while doing other things. Specification: Material: ABS Size: 9.2 x 8.4 x 2.8 cm/3.62 x 3.31 x 1.10 inch Power: 5W Battry capacity: 2400mAh Charging time: 4h Working time: 4-6 hours Life time: up to 15 hours Playback mode: support USB flash drive playback and TF card playback Note: Due to manual measurement; there may be small deviations. Available color: black; rose gold Please tell us the color you want when you buy it; or else we will send it at random HOW TO USE: 1. Place the microphone in front of your mouth to obtain the maximum amplification effect. 2. Do not whistle: keep a certain distance between the microphone and the speaker; and preferably facing each other. 3. Put on a headset; hang the amplifier speaker on your waist; then turn it on; and finally gradually increase the volume as needed. Package: 1 x Voice Amplifier 1 x Microphone 1 x Charging Cable 1 x Waist Belt 1 x User Manual&nbsp; <img data-srcid="-" src="https://image.doba.com/dgd1-tJbRinGOQYqa/5w-2400mah-voice-amplifier-multifunctional-portable-personal-voice-speaker-with-microphone-display-for-teachers-speech.jpg" alt="dropship 5W 2400mAh Voice Amplifier Multifunctional Portable Personal Voice Speaker with Microphone Display for Teachers Speech" /> <img data-srcid="-" src="https://image.doba.com/dgd1-ZRVPiGnOQcba/5w-2400mah-voice-amplifier-multifunctional-portable-personal-voice-speaker-with-microphone-display-for-teachers-speech.jpg" alt="dropship 5W 2400mAh Voice Amplifier Multifunctional Portable Personal Voice Speaker with Microphone Display for Teachers Speech" /> <img data-srcid="-" src="https://image.doba.com/dgd1-TMqayRESKcDf/5w-2400mah-voice-amplifier-multifunctional-portable-personal-voice-speaker-with-microphone-display-for-teachers-speech.jpg" alt="dropship 5W 2400mAh Voice Amplifier Multifunctional Portable Personal Voice Speaker with Microphone Display for Teachers Speech" /> <img data-srcid="-" src="https://image.doba.com/dgd1-trVWmnHSFcbT/5w-2400mah-voice-amplifier-multifunctional-portable-personal-voice-speaker-with-microphone-display-for-teachers-speech.jpg" alt="dropship 5W 2400mAh Voice Amplifier Multifunctional Portable Personal Voice Speaker with Microphone Display for Teachers Speech" /> <img data-srcid="-" src="https://image.doba.com/dgd1-faVSyEnpCYDZ/5w-2400mah-voice-amplifier-multifunctional-portable-personal-voice-speaker-with-microphone-display-for-teachers-speech.jpg" alt="dropship 5W 2400mAh Voice Amplifier Multifunctional Portable Personal Voice Speaker with Microphone Display for Teachers Speech" /> <img data-srcid="-" src="https://image.doba.com/dgd1-asvmhRnpCcVt/5w-2400mah-voice-amplifier-multifunctional-portable-personal-voice-speaker-with-microphone-display-for-teachers-speech.jpg" alt="dropship 5W 2400mAh Voice Amplifier Multifunctional Portable Personal Voice Speaker with Microphone Display for Teachers Speech" /> <img data-srcid="-" src="https://image.doba.com/dgd1-amvjhRnpKPDt/5w-2400mah-voice-amplifier-multifunctional-portable-personal-voice-speaker-with-microphone-display-for-teachers-speech.jpg" alt="dropship 5W 2400mAh Voice Amplifier Multifunctional Portable Personal Voice Speaker with Microphone Display for Teachers Speech" /> <img data-srcid="-" src="https://image.doba.com/dgd1-ZlqezRnSKcbT/5w-2400mah-voice-amplifier-multifunctional-portable-personal-voice-speaker-with-microphone-display-for-teachers-speech.jpg" alt="dropship 5W 2400mAh Voice Amplifier Multifunctional Portable Personal Voice Speaker with Microphone Display for Teachers Speech" /> &nbsp;