5W 2400mAh Voice Amplifier Multifunctional Portable Personal Voice Speaker with Microphone Display for Teachers SpeechDetails: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: ABSSize: 9.2 x 8.4 x 2.8 cm/3.62 x 3.31 x 1.10 inchPower: 5WBattry capacity: 2400mAhCharging time: 4hWorking time: 4-6 hoursLife time: up to 15 hoursPlayback mode: support USB flash drive playback and TF card playbackNote: Due to manual measurement; there may be small deviations.Available color: black; rose goldPlease tell us the color you want when you buy it; or else we will send it at randomHOW 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 Amplifier1 x Microphone1 x Charging Cable1 x Waist Belt1 x User Manual