RS100 Black Box VHF Radio with Handset SpeakerNavigate safely with the Simrad RS100 VHF marine radio. Stay connected from anywhere on your vessel with up to eight handsets four wired and four wireless and four external speakers.A modular system to fit any boatThe RS100 is a modular VHF system thats expandable and customizable to suit any boat and any on-water communication needs. The standard package includes one wired handset and one external speaker. This setup is expandable up to eight hands