American Audio WMI419
The American Audio WM-419 is a 4-channel UHF wireless microphone system that includes four wireless microphones, a wireless receiver with individual volume control and XLR audio output for each microphone, batteries and four mic clips. The WM-419 features American Audio’s Intelligent frequency Autoscan with IR synchronization with 50 channels per receiver (200 total), as well as, 16-Bit Pilot Technology to assist with eliminating frequency interface.
The WM-419 is designed for use in PA, karaoke, mobile entertainers, schools and houses of worship. It has a wireless range of 300 feet / 90M (line of site) and each microphone has 6-10-hour battery life.
 
Features:
4 Channel Wireless Handheld Mic System
Intelligent Frequency Autoscan with IR Synchronization
Includes 4 Handheld MIC Transmitters with OLED Screen and 4 Mic Clips
50 Channels Available per Receiver (200 total)
16-Bit Pilot Technology to assist with eliminating frequency interference
4 Removable Antennas 
4 XLR Balanced Outputs + 1 AF Mixed Out (1/4 Jack)
Batteries Included