Jotron’s Tron TR30 GMDSS is supplied with emergency battery only. This innovating radio allows standard GMDSS simplex channels access. In addition, the floating Tron TR30 GMDSS can be connected to an IP-67 speaker microphone or a headset with a PTT-module. Tron TR30 GMDSS has the ultimate functional design. Every detail has been developed based on user functionality in an emergency situation. Batteries are located under under Spare Parts.