A traditional sonar sends out a single frequency pulse at a time. A Compressed High Intensity Radiated Pulse (CHIRP) sonar sends a continuous stream of frequencies, ranging from low to high, and because of this, the sonar values ??are much sharper and have higher resolution than traditional sonar. The sharpness and extreme accuracy of CHIRP, in combination with the Deeper app, provide the strategic advantage you need to fish more, faster and better. https://deepersonar.com/it/it_it/prodotti/smart-sonar-chirp-plus