Excelvan Professional Wireless Microphone System Dual 2 Channel UHF Handheld Mic Receiver for Bars, Karaoke, Party, Home, Meeting What You GetExcelvan wireless microphone system UHF handheld mic with 1 year warranty and friendly customer service. ApplicationFamily entertainment, stage performance, meeting, pub, bar and other occations you need to speak louder. Anti-jammingWireless mic uses UHF band technology to realize high anti-jamming. Remote wireless transmission. Main FeaturePop/shock noise protection, professional wireless microphone system, Transmission range up to 30m/98ft. Please NoticeCustomize first before using 2 or more of this products in the same effective area to avoid the same frequency interference issue. AAA batteries are not included.