This BT Mesh Referee Comms system utilizes the newest mesh technology for excellent signal strength and sound quality. It's easy to use and devices can move in and out of the group without needing to re-pair. Plus, it allows for up to 6 devices in a single group for wide coverage of 400 meters (obstructed) and 800 meters (unobstructed). It's also waterproof, features a USB Type C port, and a 1200 mAh battery for long battery life. Lastly, it has an upgraded earpiece and mic and the device can be worn on the arm or belt.  Hard-side carrying case is standard with all orders.