Years in the making, this classic design has been improved even more by ice fishing legend Dave Genz. Dave has made his Blue Box" nearly indestructible so it will last for years of hard use. Genz redesigned the battery storage compartment and added a universal transducer holder system. The Blue Box can also accept the full line of Vexilar accessories like a Battery Status Indictor, Vexilar Flex Light or even a Dual Beam Ice-Ducer transducer. The Blue Box fits on top of a five gallon bucket for easy access and handling while fishing. Available with the Vexilar FL-18 or FL-8se. Each Genz Pack Combo comes with a 12 volt, 7 amp-hour battery with charger and an Ice-Ducer transducer. The Genz Pack comes completely assembled and ready to fish with. It also includes an instructional video. This classic FL-8se flasher is truly legendary. The worlds most popular three-color sonar flasher, the FL-8se is still one of the best all-around flasher/sonar designs. The hallmark three-color display shows weak targets in green, medium strength targets in orange and strong bottom targets in red. 525 segments of resolution, super bright LEDs and 10 interference rejection settings make the FL-8se a great year-round flasher/fish finder.