Yapalong 4000 x2 Referees Kit - Full Duplex Radio

The Yapalong 4000 x2 Referees Kit provides full-duplex communication for up to 8 simultaneous speakers and unlimited listeners, with secure encryption and global trust in sports refereeing.

• The description claims full-duplex communication allows talking and listening simultaneously.
• The description claims up to 8 users can speak simultaneously.
• The description claims the system is trusted by soccer, rugby, football, and hockey referees globally.