CHIRP sonar technology combines the power of two CHIRP ranges for the ultimate in target separation and noise rejection. The patented Skimmer transducer with built-in water-temperature sensor can track bottom up to 75mph. Displays fish icons instead of fish arches to help identify fish targets, and the unit includes track and alarm options. Advanced Signal Processing (ASP) reduces the need to manually adjust settings to see fish, structure and bottom detail more clearly, and the Pages button allows the user to quickly switch between different sonar views.What's Included In The Box? The Lowrance Hook-4x Fishfinder with Mid High Transducer ships with the following items included. The item "Lowrance Hook-4x Mid/High Fishfinder 000-12640-001" is in sale since Thursday, January 04, 2018. This item is in the category "Sporting Goods\Fishing\Fishfinders". The seller is "gpscity" and is located in Las Vegas, Nevada. This item can be shipped worldwide.