SYNCO XTalk XMax9 X9 Dual-Ear Wireless Intercom Headset System 2.4GHz 9-Person
Wireless Technology: Digital 2.4GHz. 9 Wireless Headsets with Battery Inside. Radio Output Frequency: 20dBm. Power: USB-C DC 5V. we will try our best to help you. We will be happy to resolve any issues you may have in a cordial and friendly manner.