This is a Bravo digital walkie-talkie that operates on cellular networks (PoC PTT), known as Global-PTT P0 (or Model: P0). It relies on 4G LTE communication chips to provide open and unlimited range communication across the network. Key Specifications: Communication Method: Relies on Push-to-Talk over Cellular (PoC) technology using a data SIM card. Coverage Range: Very wide or unlimited coverage as long as a cellular network is available. Features: Slim design, IP67 water and dust resistant, and a clear color screen to display connection status and time.