Norwii Wired Headset Microphone for Voice Amplifier Flexibly Adjustable Microphone for Teachers Speakers Yoga Instructors Coaches Presentations Seniors and Tour Guides

Features: Microphones size: ?9.7×5.2mm Sensitivity: -52dB ± 3dB Directivity: Unilateral directivity Operating voltage: 2.0V  Impedance: 2.2k Frequency range: 100-16kHz SNR: greater than 60dB Cable:90cm/35inch Plug Type: 3.5mm Color:black Package List: 1 X Headset Microphone Headset Microphone Using tips 1.Directional microphone, make sure the microphone above holes (sponges can be seen taking down) alignment mouth 2..Distance from the mouth of the most suitable microphone is 10-15mm 3.Put the microphone plug into the corresponding socket on the host (and not into the audio input jack hole)   4.Before weraing the Ear-hanging micropone,please don't turn on the power and volume 4.Try to avoid multiple plug microphone plug, so as not to cause poor contact