The power of simple - offers a keyed interface with dedicated buttons. The Device is easy to use and easy to install. Available in 3.5-, 5- and 7-inch display sizes Waypoint map - use the waypoint map to easily view, Mark and navigate to locations such as brush piles, stumps and docks Chirp sonar - Chirp sends a continuous sweep of frequencies which provides a wider range of information. Chirp sonar is able to create crisper fish arches with better target separation Built-in flasher - view your sonar data in the Classic flasher format; ideal for ice fishing or vertical jigging Product now includes our kayak in-hull transducer mount making it ideal for kayak fishing;Transmit power 200 W (RMS) ; Maximum depth 1,600 ft freshwater, 750 ft saltwater