The Lowrance Mark 4 HDI comes with a 4.3 inch greyscale screen. HDI stands for Hybrid Dual Imaging and provides both the Broadband Sounder and DownScan. HDI was first introduced by the Elite7 model and it provides extremely accurate fish markings and is capable of tracking bait movement.
The Humminbird 386ci Combo Portable is a powerful internal GPS and sonar system designed for serious fishing enthusiasts. The easy-to-read color display screen measures 3.5″ diagonally and its battery holds a 7-hour charge; the unit’s impressive storage capacity accomodates up to 50 routes and 2,500 waypoints. The 386ci is waterproof, backlit and comes in a convenient soft-sided carrying case. Humminbird also offers an optional in-dash mount that keeps the unit stable and secure inside the boat.