Wireless microphone manufacturers eastshine to share with you: we will waste paper into the trash, but recently there are users, only two cups of home waste clean, respectively, side hole, and then dug in a mobile phone health tube center, will be three connected. You can put waste paper cups into wireless mobile phone microphone.

    After testing, this simple wireless microphone can make mobile phone speakers voice raised about 11 db. The principle is to use two cups in the acoustic resonance, resonance occurs under the action of strong voice.
     More information of wireless microphone：www.zhjingfeng.com