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).