Garmin Striker 4 with Transducer, 3.5" GPS Fishfinder with CHIRP Traditional Transducer CLEARV SCANNING SONAR - Shows you more of what is in the water around your boat. This high-frequency sonar gives near-photographic images with detailed representations of objects, structure and fish. 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. Water rating IPX7 WAYPOINT MAP - Use the waypoint map to easily view, mark and navigate to locations such as brush piles, stumps and docks. Maximum depth-1,600 feet freshwater, 750 feet saltwater. Current draw at 12V : 0.23A 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.Display size: 1.9 x 2.9 inches (4.9 x 7.3 cm); 3.5 inches diagonal (8.7 cm)