Takstar Wireless Microphone Mic Transmitter with Receiver 6.35mm Audio Connecting Cable Anti-rolling Ring for Outdoor Activities KTV Karaoke. Wireless microphone dedicated frequency band design avoids frequency interference. Built-in windscreen minimizes plosives and wind noise. D-PLL RF frequency lock technology for accurate frequency and stable performance. Professional audio companding technique for increasing the dynamic range. Long operating range up to 50m in open area. Advanced pilot signal lock function avoids interference and eliminate the on/off mechanical noise. Transmitter is powered by two 1.5V batteries. Receiver adopts USB power interface which be powered by various devices with USB function directly. Mixed (6.35mm 1/4") output for connection with the audio processing and amplifier equipment. Two 38mm anti-rolling rings for wireless microphone use. Used for classroom, home entertainment, multimedia applications, outdoor activities, KTV and etc. Buy this product and Save 24% OFF Takstar Wireless Microphone Transmitter with Receiver.