Wireless Unidirectional Dynamic Microphone with Receiver (MIC-310) – Steren Solutions
Amazon.com: VHF Wireless Microphone, Universal Handheld Karaoke Mic Speaker, Over 110 DB Outdoor Indoor Cordless Microphone System with USB Reciver for Singing, Karaoke, Speech, Wedding, Church : Musical Instruments
DB Technologies Wired Vocal Microphone VMP-02 | eBay