TheEartec UL5S is a full-duplex wireless intercom suitable for facilitating communication among five people. Model UL5S. It can be used to provide simultaneous talk and two-way voice communication for users that need to work with their hands, yet also require one ear free to listen to what is going on around them.
The SE Global intercom system can accommodate a total of five users at once—one master headset and up to four remotes. Say goodbye to discomfort during extended wear. The headset is engineered for water and wind resistance.
Hollyland Solidcom SE Global 5S 5-Person Full-Duplex Single-Ear Noise-Canceling Headset Intercom System (2.4 GHz). The headset also supports USB-C charging, and charging while using. Simple and easy to operate, long battery life, 12 hours for the remote headset, 10 hours for the master headset Not compatible with Solidcom C1 & C1 pro.