The streamlined flat surface area of Vexilars FL-12 Ultrapack wont trap rain and snow and increases the viewing angle by 50%. LED flasher light saves energy for more time on the water. Crystal-clear 525 lines of resolution with a three-color palate selection lets you distinguish whats under the ice without confusion Depth ranges of 20, 40, 60, 80 and 200. A low-power option aids in fishing shallow water or thick weeds. Interference rejection setting wont catch the signal from other sonar units, eliminating distortion. Enclosed 12-volt, 9-amp-hour battery powers the unit efficiently for days of fishing use. No need to disconnect the battery for charging with readily available charging posts. Master power switch and battery-status readout on the unit bracket helps conserve power. The brackets high-profile places the flasher at an easily adjustable, user-friendly angle. Handle holds the transducer float. Adjustable rod holder fits on either side of the bracket. Pre-drilled holes for optional accessories and customization. Cable storage and holding grips keep the transducer under control. Housing fits and secures all FL series transducers. Nonslip bottom for firm footing on the ice. Fits easily in a 5-gal. bucket. Includes instructional DVD and tackle tray.