Mesh Communication System for communication with other vessels or with people on shore, On ear, worn around the neck design, comfortable with sunglasses, caps or helmets, Mesh Intercom connects a near-limitless number of people without pairing, Noise-free transmission via the sophisticated Sena microphone sensor even with strong winds, High-quality audio, using 2.4 GHz frequency range as Wi-Fi and Bluetooth, Devices are connected in a self-healingmesh, not in a daisy chain, 9 channel Mesh, Working distance: up to 0.5 mile, Talk time: up to 12 hours, Compatible with Sena Marine App, IPX7 waterproof rating protects against the effects of temporary immersion in water, Waterproof/floating (floating marker buoy)