Description：No batteries and no charge, the mini microphone is very convenient for you to use.This compact and portable microphone is portable, it can be packed in your backpack, handbag and so on.The mini stereo 3.5mm microphone with microphone shape design, which looks more chic.Specifically designed for many kinds of devices of you, such as cellphone, PC, recording pen and so on.Mini size is very easy to carry it, and perfect gifts for teachers, speakers and so on.Specifications:Color: black+silverSize: 58*16*57mmSound pressure degree: 38±3dbFrequency response range: 100－15KHzDirectional characteristic: Single directivity x2Note:There might be a bit color distortions due to different computer resolutions.There might be a slight errors due to different hand measurement.Package included:1* Mini MIC