The Humminbird 859ci HD XD Combo is one of the fish finders / chartplotters equipped with an Xtreme Depth sonar, which makes it a great unit if you prefer down-dropping. Similar to the other models of the 800 series, the 859ci HD XD Combo comes with an 7-inch diagonal screen, 800H x 480V pixel resolution, full color and LED backlit. The head unit has dual card reader and … [Read more...] about Hummingbird Fish Finder 859ci HD XD Combo Review