The new Cannon Optimum™ Downrigger has a whole new look and interface. Featuring a bright full-color 3.5" display that shows you critical trolling data right on your downrigger, taking the guesswork out of your trolling presentation. View sonar data* on the new Optimum downrigger with our new sonar view. Including** overlay data like true trolling depth, the true temperature at the downrigger ball, and trolling speed *Cannon downrigger transducer required ** Fish Hawk™ X4D System required Learn more about the Cannon Optimuim Downrigger at http://bit.ly/32FFxWO