Humminbird 141c 3.5-Inch Waterproof Fishfinder Affordable, compact fish finder reveals bottom, structure and fish down to 600 feet Precision 20-degree single-beam sonar optimized for definition and coverage Includes water temperature and is speed capable Tilt and swivel quick-disconnect mount system, or optional in-dash mount Measures 5.25 x 7.4 x 4 inches (W x H x D), and backed by one-year limited warranty