SYNCO XTalk XMax2 X2 2.4G Full-Duplex Wireless Intercom Headset System 500 Meter
1 Wireless Headset with Battery Inside. Wireless Technology: Digital 2.4GHz. Radio Output Frequency: 20dBm. 2 Wireless Headsets with Battery Inside. 5 Wireless Headsets with Battery Inside. Max Input Sound Pressure Level:>115dBSPL.