Portable Voice Amplifier for Teachers,Rechargeable Microphone For

[Multi-Function]: This Voice Amplifier equipped with a USB, micro SD, and 3.5 mm jack, it can be used as a loudspeaker, insert a USB memory or microSD card, or connect to a 3.5 mm stereo jack on a smartphone,supports Music Playing. [Lightweight And Easy To Use]: You can use the back detachable clip to fix it on your belt or pocket, or you can also tie it around your waist or hang it on your neck with the help of the waistband, very easy to carry. The wired headworn microphone is adjustable. You can adjust the distance between your mouth and the mic.