A racing yacht or boat-specific waterproof intercom with excellent sound reproduction that is powered by the boat’s electrical system. With its built-in push-to-talk technology, this model is intended for usage between two crew members, enabling communication between two crash helmets. When connected to your personal radio, it also enables communication through the helmets. A PTT button, an on/off switch, a power light, and a volume control are all present on the device.
Note that the image is of the four-way model.